Answer: control group
Explanation:
The control group is the one which is used in an experimental set up as a benchmark for the comparison of the changes that occur in the experimental variable or dependent variable. It is the group which does not receive any experimental treatment. The use of a control group in an experiment increases the accuracy of the results of the experiment. It is the group which is treated normally without causing any change.
Which development in plants has contributed to the evolution of large trees?
Answer:
Secondary vascular growth
Explanation:
Secondary growth in the plant allows them to be thicker, unlike primary growth that is apical. Secondary vascular cambium acts as a support for plants especially trees as they grow taller –allowing them to support their own weight. This is what is perceived as wood (secondary xylem) in a tree.
Select the correct answer.
Other than the quality of meat, livestock is also graded on
A. the ratio of meat to bone.
B.
the overall weight of the animal.
C.
the popularity of that type of livestock.
D. the physical appearance of the animal.
A. is the answer.
Livestock in not graded on the weight of the animal, its popularity, and definitely not its appearance.
Other than the quality of meat, livestock is also graded on : (A) The ratio of meat to bone
Livestock gradingLivestock is graded based of certain qualities such as the quality of the meat and its importance to human health. Livestock can also be graded based on the ratio of meat to bone. The popularity of the livestock is not a criteria used for grading or quantifying livestock because certain popular livestock might have low quality of meat. weight and appearance of the animal have no effect on livestock grading.
Hence we can conclude that Other than the quality of meat, livestock is also graded on The ratio of meat to bone.
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what can cause granite to break down into soil over time
it is because of expansion and contract of the stone in night and expand in day
well granite can be worn down over time through erosion and through abrasion (i.e.) running water of high winds carrying sand or dirt particles. but that would take many years.
Match each vocabulary word to the correct definition. 1. Mitochondrial DNA 2. Genes 3. Mitochondria 4. Hybridization 5. Polymerase chain reaction (PCR a. Binds together DNA with a complimentary DNA sequence. b. The basic and fundamental part of heredity. c. Creates strands of DNA from small samples of DNA at crime scenes. d. The small structures in the cell that are responsible for creating energy and carry several pieces of DNA. e. Inherited from one’s mother and is found outside of the cell nucleus.
Mitochondrial DNA --> Inherited from one's mother and is found outside of the cell nucleus (E.)
Genes --> The basic and fundamental part of heredity (B.)
Mitochondria --> The small structures in the cell that are responsible for creating energy and carry several pieces of DNA (D.)
Hybridization --> Binds together DNA with a complimentary DNA sequence (A.)
Polymerase chain reaction --> Creates strands of DNA from small samples of DNA at crime scenes (C.)
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1)
Which plant cell organelle helps maintain the shape of the cell by helping to maintain turgor pressure?
A) cell membrane
B) cell wall
C) vacuole
D) cytoskeleton
The plant cell organelle that helps maintain shape of the cell by helping to maintain turgor pressure is
B. Cell Wall
the answer is (D) the cytoskeleton helps maintain rigidity of the cell
Explain what is epistasis and how is it different from dominance?
Final answer:
Epistasis is a form of genetic interaction where one gene masks the expression of another gene, which differs from simple dominance which occurs when a dominant allele masks the expression of a recessive allele within the same gene. In the context of the shepherd's purse plant, epistasis results in triangular seeds unless both genes are homozygous recessive, leading to a 15:1 phenotypic ratio when two heterozygotes are crossed.
Explanation:
Epistasis is a genetic phenomenon where one gene interferes with or masks the expression of another gene. The term epistasis comes from Greek roots meaning "standing upon." An epistatic gene that does the masking is referred to as epistatic, while the gene whose expression is masked is called hypostatic. This relationship can profoundly affect the phenotypic ratios seen in genetic crosses, different from the simple dominant-recessive relationships seen in Mendelian inheritance. The biochemical basis for epistasis often involves gene pathways where one gene's function is necessary for another gene further down the pathway to be expressed.
Dominance vs. Epistasis
While dominance refers to the interaction between different alleles of the same gene, with the dominant allele masking the expression of a recessive allele, epistasis involves interactions between different genes. Epistasis can be complex, with multiple gene interactions leading to variations in phenotype that are not predictable by simple dominance. For instance, in shepherd's purse plants (Capsella bursa-pastoris), the presence of a dominant allele in any of two genes results in triangular seeds, overriding the seed shape that would be produced by the other gene. A phenotype of ovoid seeds only occurs when there are two homozygous recessive genes (aabb). Hence, crossing two heterozygotes for each gene (AaBb x AaBb) yields a phenotypic ratio of 15 triangular to 1 ovoid.
Final answer:
Epistasis is a genetic interaction where one gene's phenotype expression masks another gene's expression, differing from dominance that occurs between alleles of the same gene. Examples include the coat color of mice and seed shape in the shepherd's purse plant.
Explanation:
Epistasis is a genetic interaction where the phenotype effect of one gene (epistatic) masks or suppresses the expression of another gene (hypostatic). This is different from dominance, which refers to the interaction between alleles at the same gene locus, with dominant alleles expressing their effects over recessive ones. An example of epistasis is in the coat color of mice, where a mouse with a certain genotype (cc) will always be albino, regardless of the alleles at another locus related to fur color.
Physiological epistasis and statistical epistasis are two concepts related to these genetic interactions. Physiological epistasis involves the actual biological interaction between gene products, while statistical epistasis refers to the measured deviation from the expected genetic ratios in a population. In contrast, dominance only describes the relationship between alleles at a single locus, not interactions across different loci.
Understanding Epistasis through Examples
In the shepherd's purse plant, seed shape demonstrates dominant epistasis. When both genes A and B are present in dominant form with any combination other than homozygous recessive (aabb), the seeds will always be triangular. This genotypic relationship modifies the phenotypic ratio from the standard 9:3:3:1 of a dihybrid cross to 15 triangular:1 ovoid upon crossing heterozygotes for both genes (AaBb x AaBb).
Which of the following relationships correctly defines the situation: Lichen – cyanobacteria produces food for the fungus; fungus provides water and minerals for the cyanobacteria.
A. Commensalism
B. Predation
C. Competition
D. Parasitism
E. Mutualism
the answer is E. because the two creatures are assisting in the survival of the other.
In an ecosystem when an organism lives together interdependently on biotic factors or other organisms is called an ecological relationship. It can be a favourable or negative relationship.
Mutualism is the relationship between lichen - cyanobacteria and the fungi.
Classification of Ecological association:Commensalism is a type of optimistic relationship in which one organism gets profited from another through modes of food, shelter, locomotion etc. Example orchids growing on other trees.Predation is an ecological relation in which the predator chases and kills the target for food. For example, snakes hunting mice and rabbits.In an ecosystem, two diverse species contest for the same elements is called competition. For example tigers and lions hunting for deer.Parasitism is an unfavourable biological relation in which one species profits from the hosts by harming them in certain ways. For example, ticks living on cats and dog fur.Mutualism is a positive relationship in which both species benefits from each other by working together. For example, cyanobacteria produce food through biochemical processes and share it with fungi and in return, the fungus provides them with a place to live.Thus, option E. mutualism is the relation exhibited by lichen cyanobacteria and the fungi.
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Which factor cause these cooler temperatures? Check all that apply.
The factor that causes cooler temperatures are being closer to the ocean and ocean current bringing cooler air.
What is temperature?
Temperature can be defined as a scalar quantity that shows the degree of hottest or coldness of a body. It is measured in C⁰ or F⁰.
In the physical environment, the degree of it's coolness depends on the surroundings.
When they moved from Tennessee to California it became cooler due to the environment being closer to the ocean and ocean current bringing cooler air
Cooler temperatures in California compared to Tennessee may be influenced by being closer to the ocean, ocean currents bringing cooler air, and mountain ranges.
The observed cooler temperatures in California, following a move from Tennessee, can be attributed to a combination of geographical and climatic factors. Firstly, being closer to the ocean tends to have a cooling effect on the climate. The proximity to large bodies of water, such as the Pacific Ocean in the case of California, moderates temperatures by preventing extreme heat in summers and maintaining milder conditions in winters.
Secondly, ocean currents play a crucial role. If ocean currents are bringing cooler air, it further contributes to the overall cooling of the coastal areas. The movement of air masses over the ocean can bring lower temperatures, influencing the climate of the adjacent land.
Lastly, the presence of mountain ranges, which is characteristic of California's topography, can also contribute to cooler temperatures. As air ascends the windward side of mountains, it cools and releases moisture, resulting in cooler and more moderate temperatures on the leeward side of the mountains.
In combination, these factors create a climate in California that is noticeably cooler than that of Tennessee, providing a diverse range of environmental conditions shaped by the state's geographical features and its proximity to the Pacific Ocean.
What wavelengths of light are absorbed by chlorophyll? What wavelengths are reflected
Chlorophyll absorbs light in the red and the blue regions of the visible light spectrum. Green light is not absorbed but reflected, making the plant appear green.
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The wavelengths of light are absorbed by chlorophyll as it absorbs light in the red and the blue regions of the visible light spectrum. Green light is not absorbed but reflected, making the plant appear green.
What is wavelength?Wavelength has been the distance between two identical or similar positions it means that it is the distance between crests or trough in the adjacent cycle of the waveform.
Wavelength is denoted by (lambda).
It is measured in meter, or centimeter, or millimeters.
Mathematically,
Wavelength is equal to velocity divided by frequency,
So,
Wavelength (lambda) = Velocity/frequency.
Velocity is in meter per second.
Frequency is in 1/second.
Prism is a transparent object in which if sunlight is passed then it will be split in a VIBGYOR
where V = vilot, I = indigo, B = blue, G = green, Y = Yellow, O = orange, R = red.
In this series wavelength of red is higher and violet is smaller and frequency of violet is higher and red is smaller.
Therefore, The wavelengths of light are absorbed by chlorophyll as it absorbs light in the red and the blue regions of the visible light spectrum. Green light is not absorbed but reflected, making the plant appear green.
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A guinea pig with long hair (hh) is crossed with one that has short hair (HH).Set up a punnett square
A cobaia tem 100% de nascer com cabelo curto, sendo Hh
HH is dominant, so short hair would be answer.
what is the function of meristem
Primary meristematic tissue helps the plant increase in length or vertical growth, meaning it helps the plant grow up toward the sun and down into the soil. It also helps a plant grow in thickness so that the roots and branches are stronger.
hope this helps :)
Primary meristematic tissue helps the plant increase in length or vertical growth, meaning it helps the plant grow up toward the sun and down into the soil. It also helps a plant grow in thickness so that the roots and branches are stronger.
How someone’s brain living with adhd can perceive information from outside world that could turn impact performance in class?
Final answer:
ADHD affects students' ability to focus, process information, and behave in ways considered appropriate in the classroom. It can lead to missed deadlines, inattentiveness, and academic struggles, and requires understanding and support from educators for effective learning.
Explanation:
How ADHD Affects Classroom Performance
ADHD, or Attention Deficit/Hyperactivity Disorder, can significantly impact how students perceive and interact with the world around them, which influences their academic performance. Students with ADHD might exhibit high levels of frustration and distraction. These manifestations often lead to perceived inappropriate behavior, difficulties in meeting deadlines, errors in work that appear careless, and challenges in following instructions, all of which contribute to struggles within the educational setting.
Moreover, ADHD is not just a childhood concern as previously thought, but a condition that affects individuals across all ages. This misunderstanding can result in inadequate support for students who continue to struggle with the condition into adulthood. Mental health conditions, including ADHD, can have comorbidity with disorders such as depression and OCD, complicating the educational experience further.
Mental health disorders can distort a student's ability to focus, process new information, and impact attendance due to issues such as anxiety and sleep disturbances. Teachers and educators need to recognize and adapt to these challenges to support individual learning needs effectively.
tp-37 who should you call first if you have an oil or fuel spil?
Call the U.S. Coast Guard National Response Center.
Answer:
You should call the US Coast Guard National Response Center.
Explanation:
The Coast Guard is a national institution responsible for providing various maritime services, usually related to authority. The term refers to institutions with responsibilities that can vary widely, from country to country. Thus, depending on the country, the nature of its coastguard can range from a heavily armed military force with broad powers of police authority, to a simple organization of volunteers with functions limited to maritime search and rescue without any authority.
A certainty is that the Coast Guard is responsible for controlling or resolving possible marine disasters, so if an oil or fuel leak occurs, it is best to call the US Coast Guard National Response Center for this leak to be contained as soon as possible.
How are leaves and plants adapted to the tundra?
A. They are “needles” that stay on the trees.
B. They are large and tilt toward the sun
C. They make colores patterns on rocks
D. They are sponge-like to hold moisture
d they are sponge like to hold moisture
Answer:
They are large and tilt toward the sun.
Explanation:
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The breakdown of large molecules by enzymes and the addition of water is known as a ____ reaction.
a.
oxidation
b.
decarboxylation
c.
hydrolysis
d.
condensation
e.
reduction
Answer: Hydrolysis
Explanation: It is hydrolysis. In hydrolysis, larger molecules, such as polymers, are broken down into their monomers by the action of an enzyme and the addition of a water molecule.
A hydrolysis reaction involves the breakdown of large molecules by enzymes and the addition of water.
Explanation:The breakdown of large molecules by enzymes and the addition of water is known as a hydrolysis reaction. The term hydrolysis is derived from 'hydro-' which means water and '-lysis' which means to break down. In the process of hydrolysis, a water molecule is added to the substance, which causes the substance to separate into two parts. This is an important process in many biological systems, such as the digestion of food in the body.
Enzymes act as catalysts, facilitating this reaction by lowering the activation energy required for the hydrolysis to occur. Hydrolysis is essential for various biological processes, such as digestion, where complex carbohydrates, proteins, and fats are broken down into their constituent monomers like glucose, amino acids, and fatty acids. These monomers can then be absorbed and utilized by the body for energy production and various cellular functions.
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PLEASE HELP!
Question 1 (1 point)
Which of the following economic exchanges involves trading one good or service for another?
options:
Reciprocity
Redistributive
Market exchange
Supply and demand
———————————-
Question 2 (1 point)
Which of the following is an attribute of achieved status? options:
It is earned based on actions.
It is earned based on the accomplishments.
It is earned based on special skills.
All of the above
———————————————
Question 3 (1 point)
Which of the following is the best example of an egalitarian society?
options:
Bands
Tribes
Chiefdoms
States
———————————————
Question 4 (1 point)
From what aspect did the earliest societies react to death?
options:
Fear
Indifference
Religious beliefs
Superstitions
———————————————
Question 5 (1 point)
Which of the following answers correctly ranks the communities from smallest to largest?
options:
Hamlet, village, city, town, regional capital
Regional capital, city, town, village, hamlet.
Hamlet, village, town, city, regional capital.
Village, hamlet, town, regional capital, city
———————————————
Question 6 (1 point)
Which of the following is the highest form of social ranking?
options:
Chiefs
Rulers
Divine kingships
Priests
———————————————
Question 7 (1 point)
Which is a characteristic of an egalitarian society?
options:
Individuals are identified by their social ranking.
Goods are collected and distributed as need arises.
Everyone is of equal importance.
There is a clear hierarchy.
———————————————
Question 8 (1 point)
Which of the following polity had the most complex social structure?
options:
Band
State
Chiefdom
Tribe
———————————————
Question 9 (1 point)
What change did states bring about?
options:
The emergence of classes.
They ended the equal distribution of goods.
They began utilizing forced labor for the first time.
They ended kinship ties between the ruler and the people.
The questions covered various aspects of social studies, including economic exchanges, achieved statuses, types of societies, reactions to death, community sizes, social rankings, characteristics of egalitarian societies, social structures, and changes brought about by states.
Explanation:The answers to your questions are as follows:
Reciprocity involves trading one good or service for another.An attribute of achieved status is that it is earned based on actions, accomplishments, and special skills. So, the answer is 'All of the above'.The best example of an egalitarian society is Bands.The earliest societies reacted to death from a religious beliefs aspect.The communities ranked from smallest to largest are: Hamlet, village, town, city, regional capital.The highest form of social ranking is Divine kingships.A characteristic of an egalitarian society is that everyone of equal importance.The polity with the most complex social structure is a State.The change that states brought about was the emergence of classes.Learn more about Social Studies :https://en.wikipedia.org/wiki/Social_studies
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This response answers nine questions related to various concepts in social studies, including economic exchange, achieved status, egalitarian societies, reactions to death, community rankings, social ranking, characteristics of egalitarianism, complex social structure, and changes brought about by states.
Explanation:Question 1: The economic exchange that involves trading one good or service for another is called Market exchange as it occurs in a marketplace where individuals buy and sell goods or services.Question 2: Achieved status is earned based on actions, accomplishments, and special skills.Question 3: The best example of an egalitarian society is Bands, as they have a relatively equal distribution of power and resources among their members.Question 4: The earliest societies reacted to death based on religious beliefs as they had rituals and ceremonies associated with burial and mourning.Question 5: The correct ranking of communities from smallest to largest is Hamlet, village, town, city, regional capital.Question 6: The highest form of social ranking is Divine kingships as this position is often attributed to individuals with a divine or semi-divine status.Question 7: A characteristic of an egalitarian society is that goods are collected and distributed as needed, rather than individuals being identified by their social ranking or having a clear hierarchy.Question 8: The polity with the most complex social structure is the State, as it has a formalized government system and a division of labor.Question 9: The emergence of states brought about several changes, including the emergence of classes, the end of equal distribution of goods, and the utilization of forced labor.Learn more about Social Studies here:https://brainly.com/question/19073176
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Does mechanical waves travel faster or slower as density of matter increases
Answer:
Travel is faster as density of
matter increases
Explanation: This should be right not sure hopefully this helps!(Let me know in the comments plz!)
is the energy used by cells for work. It is produced within the_(organelle)
and is made through the process of_12 words)
Answer:
ATP, Mitochondria, Cellular respiration.
Explanation:
The Krebs cycle of, cellular respiration, in the mitochondria results to the an accumulation of protons in the inter-membrane space of the organelle. This proton motive force is harnessed in the electron transport chain by ATP synthase to generate ATPs.
Most drug urine tests done for schools do not test for alcohol or tobacco. Write a clear and coherent argument for why you agree or disagree with this policy?
I disagree with this policy because they are ignoring drugs that can cause chronic disease within children who start using them early. all drugs are dangerous if abused.
What is the term that describes the size of a population that can be supported by a given ecosystem?
➷ It is called the 'carrying capacity.'
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Answer:
Carrying Capacity
Explanation:
All ecosystems are capable to support a certain number of organisms, beyond which the rate of consumption of their resources (by the increased population) will be much faster than the rate at which they are replenished and hence the ecosystem will destabilize.
This population which an ecosystem can sustain without any pressure on its resources thereby preserving them for future generations is called the carrying capacity of an ecosystem.
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What natural factors do scientists study to understand long-term climate change? Check all that apply.
Earth’s position
pollen grains
tectonic activity
volcanic activity
solar energy
the answer is :
1)Earth’s position
3)tectonic activity
4)volcanic activity
5)solar energy
Answer:
Options (1), (3), (4) and (5)
Explanation:
The factors that are needed to study in order to understand better about the long-term climate changes are the position of the earth with respect to the sun, type, and intensity of the tectonic and volcanic activities and also the amount of solar energy entering into the earth's atmosphere.
If the position of the earth changes with respect to the sun and also if changes occur in its plane of orbit, then there will be significant changes in the climate of the earth.
Rapid and high intensity tectonic and volcanic activities can also lead to the increase in the earth's global temperature as it will produce a large amount of gases and dust particles from the volcanoes that are trapped in the atmosphere and does not allow the sunlight to reach the ground surface. Thus, affecting the earth's climate.
The increasing amount of solar radiation can also enhance the earth's climate as it will significantly warm the surface of the earth.
Thus, the correct answers are options (1), (3), (4) and (5).
Is 28.5 qualitative or quantitative data?
28.5 is quantitative data
Quantitative because it is a number
As you descend through the atmosphere, what would you expect the outside pressure to do?
A. Increase/ decrease
B. Increase/increase
C. Decrease/decrease
D. Decrease/ increase
Final answer:
Descending through the atmosphere causes an increase in outside pressure due to the increasing weight of the air above. Pressure in the atmosphere is related to the altitude, with higher pressure at lower altitudes. So the correct option is B.
Explanation:
As you descend through the atmosphere, the outside pressure is expected to increase. This is because pressure is a measure of the force exerted by the weight of air above you. At higher altitudes, there is less air above you, thus lower pressure. When you descend, more air is above you, and the weight and pressure increase accordingly.
For instance, when a scuba diver descends into the ocean, which is similar in principle to descending through the atmosphere, the water pressure increases significantly at greater depths due to the weight of the water above. In the context of the atmosphere, air molecules are pulled toward Earth by gravity, so the closer you are to the surface, the more compressed the air molecules are, leading to higher pressure. This concept is also explained by air pressure decreasing with altitude due to fewer air molecules being present.
Final answer:
Descending through the atmosphere results in an increase in the outside pressure due to the greater mass of air above you exerting pressure, following the principles of atmospheric pressure and gas behavior.
Explanation:
As you descend through the atmosphere, the outside pressure would be expected to increase. This is because as altitude decreases, the amount of air above you that is exerting pressure increases due to gravity, hence compressing the air molecules closer together. The relationship between altitude and atmospheric pressure is that pressure increases as you move from higher to lower altitudes.
The relevant concepts from the provided information that relate to gas pressure include understanding the behavior of a gas inside a hot air balloon. When the total pressure of an atmosphere increases, as in the case of descending towards the Earth's surface, the pressure on the gas inside the balloon would also increase. This follows the general gas laws where, in a closed system, a decrease in volume and an increase in atmospheric pressure would cause an increase in the gas's pressure.
What is the relationship between DNA, codons, and proteins
the relationship between DNA, codons, amino acids, and proteins. During transcription, DNA is transcribed into messenger RNA when the the base codes in DNA are copied. mRNA serves as the code for assembling amino acids in a certain order.
The genetic information encoded in the nucleotide sequence flow from DNA to codons of the mRNA sequence and then from the mRNA to protein.
During gene transcription, a specific DNA sequence is used to create a complementary RNA sequence called messenger RNA (mRNA).Subsequently, this mRNA is used as a template to create a protein by a mechanism called translation.The linear order of triplets of nucleotides or 'codons' in mRNA determines the order of amino acids in the growing polypeptide chains (i.e., the protein).In conclusion, the genetic information encoded in the nucleotide sequence flow from DNA to codons of the mRNA sequence and then from the mRNA to protein.
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Given these characteristics of life, which of the following objects is considered a living organism
A living organism must possess all six characteristics of life: It responds to the environment, grows and develops, produces offspring, maintains homeostasis, has complex chemistry, and consists of cells.
Explanation:A living organism must possess all six characteristics of life:
It responds to the environment. For example, a plant growing towards sunlight.It grows and develops. For example, a seed germinating and growing into a tree.It produces offspring. For example, an animal giving birth to babies.It maintains homeostasis. For example, a human maintaining a stable body temperature.It has complex chemistry. For example, the metabolic processes in a cell.It consists of cells. For example, a bacteria is a single-celled organism.Based on these characteristics, a tree would be considered a living organism as it exhibits all six traits.
Which of the following best describes calcitonin? A. It's released by the adrenal medulla. B. It's released by the parathyroid gland. C. It functions to prevent hypercalcemia. D. It functions to prevent hypocalcemia.
the correct answer is B) its released by the parathyroid gland
Select the correct answer which sentence describes an object that has kinetic energy
was there any more info on this?
Answer:
A boat sails across the ocean
What are all the biological processes in the carbon cycle?
The biological carbon cycle. Through photosynthesis, green plants use solar energy to turn atmospheric carbon dioxide into carbohydrates (sugars). Plants and animals use these carbohydrates (and other products derived from them) through a process called respiration, the reverse of photosynthesis.
The biological processes in the carbon cycle involve the intake of carbon dioxide by autotrophs to form organic compounds, consumption of autotrophs by heterotrophs which use the organic compounds for energy and exhale CO2, the biological carbon pump process, and the storage and release of carbon in and from various carbon reservoirs.
Explanation:The biological processes in the carbon cycle primarily involve autotrophs (like plants and algae) and heterotrophs (like animals). The cycle begins with autotrophs, which take carbon dioxide (CO2) from the atmosphere or dissolved form in water bodies to form organic compounds like glucose. This process, known as photosynthesis, requires energy from the sun and results in the release of oxygen as a byproduct.
Next, heterotrophs ingest the autotrophs and break down the organic compounds for energy through the process of respiration, releasing carbon dioxide back into the atmosphere or water bodies. A process known as the biological carbon pump involves autotrophs fixing inorganic carbon which then fall to the sea floor as they die, preventing the consumption and return of their CO2 to the atmosphere by saprobes.
Another important process in the carbon cycle is the long-term, geological storage of carbon in carbon reservoirs, such as atmosphere, oceans, ocean sediment, soil, fossil fuels, and the Earth's interior. Over time, human activities like fossil fuel burning have accelerated the return of stored carbon to the atmosphere, leading to increased atmospheric CO2 levels and concerns about climate change.
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in ______, water enters cracks in rocks and freezes. water ______ when it freezes and makes the cracks larger.
ice wedging, expands
Freeze-thaw weathering happens when water enters cracks in rocks and freezes, expanding and enlarging the cracks. The water expands because in its solid state (ice), the molecules are more spread apart than in liquid state. This spread-out molecular structure causes the ice to increase in volume and exert pressure on the rock.
Explanation:
In the process known as freeze-thaw weathering, water enters cracks in rocks and freezes. Water expands when it freezes, which makes the cracks in the rocks larger. Water's unusual behavior when it freezes is due to its molecular structure. As temperatures drop, there's less energy to break the hydrogen bonds between water molecules. These bonds stay intact and form a rigid, lattice-like structure known as ice. The ice is less dense than liquid water because the molecules are farther apart. This expansion puts pressure on the surrounding rock and can make the crack larger.
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Please answer this 2 question!!!!!
Number 1 is B becuase when you are described an organism you usually recognize it by it's color or fur type. For instance, if you asked me what animal has brown fur, then you would imagin a bear.
Number 2 is B also because they both have nucleus in their cells.