Ecologists measure the population density by using the Quadrat method and the Mark and Recapture method.
Answer:
They use the method of marking and recapture.
Explanation:
The method of marking and recapture is the most common way that ecologists use to measure population density. To carry out this method, scientists must remove some members of the population and mark them in some way, so that they can be identified later. After correctly marking them, the members return to their original population, where they will mix with the other members of the population for a period of time determined by the ecologist. The important thing is that this time is enough for the marked members to mix with the rest of the population. While waiting for that time to pass, ecologists continue to capture and mark other members of the population until the recapture of the first marked members takes place. In this way, the size of the population will be estimated through the proportion of catches.
Muscles cannot function without ATP. Review your knowledge of ATP by answering the following questions. ATP molecules store and release .
Answer:
The ATP molecule store energy and releases it.
Explanation:
The ATP stands for adenosine triphosphate. The ATP provides energy in cellular processes of the body. The attachment of terminal phosphate group to molecule helps ATP molecule to store energy. The energy stored at one location is transferred to other cell. The transferred energy is released to perform biochemical reactions.
ATP, or Adenosine triphosphate, stores and releases energy that's essential for cellular processes, including muscle contraction. It stores energy in the bonds between its three phosphate groups. When these bonds are broken, energy is released, providing fuel for activities within the cell, like muscle contraction.
Explanation:Adenosine triphosphate, more commonly known as ATP, plays an essential role in energy transfer within cells. ATP molecules are responsible for storing and releasing energy. This responsibility makes them absolutely critical for a multitude of cellular processes, including muscle contraction, hence why muscles cannot function without ATP.
ATP stores energy in the bonds between its three phosphate groups. When one of these bonds are broken, through a process called hydrolysis, energy is released. This released energy is then used to fuel various activities in the cell, including the contraction of muscles.
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How many population(s) can have the same species name
Answer:
A population is all the organisms that both belong to the same species and live in the same geographical area. A species is defined as a group of organisms capable of interbreeding and producing fertile offspring. There can be multiple populations of one species but a population only consist of one species.
Explanation:
A population consists of all individual organisms of the same species living in a specified area.
A population refers to all individual organisms of the same species living and interacting in a defined area.
For example, all the angelfish living in a specific part of the ocean constitute the angelfish population.
The number of populations with the same species name can vary from a few individuals to millions, depending on the species and its habitat.
What is a station model used to create?
A. A digital forecast
B. depiction of a jet stream
C. long-term forecast
D. surface weather map
What is a station model used to create?
The correct answer is D. surface weather map
Station models are illustrations that shows the weather occurring at a given reporting station. These are symbolic illustrations. These models were created to fit a number of weather elements into weather maps.
Photosynthesis and cellular respiration are blank that occur in cells
Chemical Reactions. There is your answer.
Bone and blood cells are considered___.
bone marrow
hope this helps :)
They are called specialized cells
HELP ASAP
Mars has much less gas in its atmosphere than Earth does. This is a reason why, on Mars, _____.
A. it is warmer
B. there is no wind
C. the air pressure is lower
D. the air pressure is higher
the answer is c. the air pressure is lower
the air pressure on mars is lower as there is little gas. Air is gas so with little gas you could expect the air pressure to be lower and less dense making it hard for us humans to breathe
plz vote my answer the brainiest, hope this helps!
A purebred y’all plant crossed with a purebred short plant. All F1 offspring are tall. Is the allele for tallness dominant or recessive
dominant because if it wasm't 1 would come out short
Final answer:
The allele for tallness is dominant as it is expressed in the phenotype of all F1 offspring resulting from the cross between a purebred tall plant and a purebred short plant.
Explanation:
If a purebred tall plant is crossed with a purebred short plant and all the F1 offspring are tall, this indicates that the allele for tallness is dominant. This is because the tall characteristic is visible in the presence of both a tall allele and a short allele within the genotype of the offspring. From Mendel's work, we know that when describing genetic crosses, the dominant factor is represented with a capital letter (T for tall) and the recessive factor is represented by a lowercase letter (t for short). In this scenario, the plants with the genotype TT or Tt will be tall, and plants with the genotype tt will be short. Assuming the purebred tall parent had a genotype of TT and the purebred short plant had a genotype of tt, all the F1 offspring would have a genotype of Tt, expressing the tall phenotype because the dominant allele for tallness 'masks' the recessive short allele.
How many trophic levels are there in the following food web
Answer: A.4
Explanation:
The food web provided in the image, there are C.3 trophic levels. Therefore ,C.3 is correct .
Producer: Grass is the producer at the base of the food web, as it can produce its own food through photosynthesis.
Primary Consumer: Worms are the primary consumers, as they consume the producers (grass) directly.
Secondary Consumer: Spiders are the secondary consumers, as they consume the primary consumers (worms).
The robin is not part of the food web as it does not directly feed on the worms.
Trophic levels are the different feeding positions in a food chain or web. They are numbered starting with the producers at the bottom, then the primary consumers, then the secondary consumers, and so on.
The energy in the food web flows from the producers to the primary consumers to the secondary consumers.
At each level, some of the energy is lost as heat, so there is less energy available at each higher trophic level. This is why there are typically no more than four trophic levels in a food web.
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The goal of a statement of purpose is:
Answer:
A statement of purpose's goal is to convince someone that you should be admitted to the program or be awarded a position.
Explanation:
can u please mark me as brainliest
Answer:
to indicate what is expected to be accomplished in doing an experiment.
Explanation:
just took it trust me
Community mobilizations seek to engage members of a town of a town and ______ for their community. A) make them feel guilty B) accept blame C) accept responsibility
Answer:The answer is c: Community mobilizations seek to engage members of a town and accept responsibility for their community.
Explanation: Community mobilizations seek to engage members of a town and accept responsibility for their community.
Community mobilization is referred to as process through which communities members engage in actions carried out by the community. This is a process through which community members carry out activities in the community on a participatory level to improve education, health and other conditions. Through this process, resources, needs ,community priorities and solution are identified.
Which option shows a reaction in which calcium carbonate (CaCO3) produces calcium oxide and carbon dioxide?
synthesis: CaO + CO2 →
CaCO3
double displacement: CaO →
CO2 + CaCO3
decomposition: CaCO3 →
CaO + CO2
single displacement: CaCO3 →
CaO + CO2
The reaction in which calcium carbonate produces calcium oxide and carbon dioxide is: CaCO3 = CaO + CO2. Thus, the third option is the right one.
The breaking down of calcium carbonate to calcium oxide and carbon dioxide is called DECOMPOSITION REACTION. A decomposition reaction is a type of reaction in which a single element is broken down into two or more elemental parts, which are less complex than the parent compound.There are three types of decomposition reaction, these are thermal, photo and electrolytic decomposition reactions.
What causes an object with mass to have weight?
Gravity is the attractive pull between two objects that have mass. The strength of gravity is directly proportional to the amount of mass of each object. ... An object with twice as much mass will exert twice as much gravitational pull on other objects. The gravitational force increases as the size of an object increases
Are Platypus mammals ?
yes! They're also the only mammal that lays eggs.
In a forest ecosystem including rabbits,wolves,foxes and plants, what are two possible reasons the rabbit population might decline?
Enter your answer in the space provided.
Hints to Question 2- What do animals need to survive? What can hurt them?
Because there are to many predators and they have no space to hide
I NEED HELP!!!! ASAP NO ROCKY!!!!!! 20 POINTS!!!!!
answer should be D run off
mark brainliest if correct !!
D. runoff is your answer Hope I helped you out
Judging and evaluating advertisements requires critical thinking because _______.
a.
advertisements can contain confusing, misleading information
b.
all advertisements contain false information
c.
advertisers always want to convince consumers to buy unnecessary items
d.
truth in advertising laws ensure the accuracy of information in advertisement
A. advertisements can contain confusing, misleading information.
Commonly, you will see small words flash across the bottom of the screen, these words contain the truth of the statement. This means that the big, colorful words are only a partial truth to the reality of the sale. For example it could be a limited sale on a specific portion of a store like in a jeans section, but only certain brands of jeans will be on sale.
Answer:
a
Explanation:
describe two properties of an exchange surface that would facilitate rapid diffusion rates
molecules and gaseous
The diffusion rate across an exchange surface is dictated by the extent of the concentration gradient and the surface area and thickness of the plasma membrane. A higher concentration gradient and larger surface area promote rapid diffusion, whilst a thicker plasma membrane slows down diffusion.
Explanation:Two properties of an exchange surface that would facilitate rapid diffusion rates are the extent of the concentration gradient and the surface area and thickness of the plasma membrane.
The extent of the concentration gradient is a key determinant of the diffusion rate. The greater the difference in concentration between two regions, the faster diffusion occurs. On the other hand, when the distribution of the material approaches equilibrium, the diffusion rate tends to decrease.
The surface area and thickness of the plasma membrane also affect the rate of diffusion. A larger surface area enables more materials to diffuse simultaneously across the membrane, thereby increasing the diffusion rate. Conversely, a thicker membrane inhibits the passage of materials, leading to a slower diffusion rate. This principle is applied in cells, where surface area-to-volume ratios are used to predict which cell(s) might eliminate wastes or procure nutrients faster by diffusion.
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How can humans and their actions affect ecosystems?
∵·············Hi there··········∵
Human activity affects ecosystems in a wide variety of ways, but it primarily does so through agriculture, habitat destruction, water use and fishing. Whenever humans enter a habitat, they tend to reshape it to fit their own needs, destroying the resources that other animals use, which drives them out.
Hope this helps!!:)
can anyone please read carefully and answer this for me please i need help
Answer 1:
A type of molecule that keeps everything in place.
Answer 2:
proteins
Answer:
The molcule that Keeps everything together. And different types of proteins
Hope this helped!!
what is the principal source of dissolved substances in the ocean
weathering
outgassing
infiltration
vaporation
Pretty sure it’s weathering but not 100%
Answer:
infiltration
Explanation:
As Na and Cl make up much of the dissolved common salts found in the ocean waters, the element in the earth's crust can be easily be dissolved in the rain and river and get carried away from the runoff of the river. Infiltration is process by which water on the ground enters the soil. The porosity of the soil particles on land water determine the infiltration capacity and thus are a major source of dissolved sediments in water bodies. Also, rainfall influences this rate of sediment flows in water all the organic and inorganic matter in the soil is mainly composed and collected from the rain and discharge rate of the soil. Weathering produces mass wasting and erosion of the landforms from the above and thus indirectly related to the dissolved content.what are the pros and cons of hydropower
Answer:Hydroelectric power is not perfect, however, and does have some significant disadvantages: Hydropower is non-polluting, but does have environmental impacts. Hydropower facilities can affect land use, homes, and natural habitats in the dam area
Explanation:
Hydroelectric power is not perfect, however, and does have some significant disadvantages: Hydropower is non-polluting, but does have environmental impacts. Hydropower facilities can affect land use, homes, and natural habitats in the dam area
Final answer:
Hydropower, also known as hydroelectric power, is a clean and renewable source of energy that relies on the force of moving water to generate electricity. While it is reliable and flexible, there are also drawbacks such as its environmental impact, cost, and limited potential for expansion.
Explanation:
Hydropower, also known as hydroelectric power, is a type of renewable energy that relies on the force of moving water, typically from rivers or dams, to spin turbines and generate electricity. Like any source of energy, hydropower has both pros and cons.
Pros of Hydropower:
Clean and renewable: Hydropower does not directly produce air pollutants and the source of power, water, is regenerated naturally.Reliable: Hydropower is a dependable source of energy as long as there is a steady supply of water.Flexible: The output of hydropower can be easily adjusted to meet fluctuations in electricity demand.Cons of Hydropower:
Environmental impact: The construction of dams and reservoirs for hydropower can disrupt ecosystems, obstruct fish migration, and result in the loss of habitats.Cost and space: Building hydropower facilities can be expensive and require large areas of land.Limited potential: The availability of suitable locations for hydropower is limited, and not all regions have access to rivers or suitable topography.This energy comes from moving object, or objects that have stored energy. * sound energy chemical energy electrical mechanical
Motion energy, or the more common term, mechanical energy is the energy stored in objects.
The more an object moves faster, the more energy is stored. Some examples of motion energy include wind, a flowing river, a moving car, or a person running.
Final answer:
Mechanical energy is the energy associated with moving objects or storing energy, such as in kinetic or potential forms. Other forms like chemical, sound, and electrical energy can be transformed into mechanical energy. A car's movement exemplifies kinetic energy, while a compressed spring showcases potential energy.
Explanation:
The question refers to energy that comes from moving objects or stored energy sources. This type of energy is commonly known as mechanical energy, which is the sum of kinetic and potential energy in an object. Kinetic energy is the energy of motion, while potential energy is stored energy that is ready to be converted into other forms. For instance, a moving car has kinetic energy, and a compressed spring has potential energy.
Other forms of energy mentioned include sound energy, which involves the vibrations of matter; chemical energy, associated with the arrangement of atoms in molecules such as in food or fuel; and electrical energy, coming from the movement of electrons. Each of these forms of energy can be converted from one to another, like chemical energy converting to mechanical to power a car, or electrical energy converting to light in a bulb.
Understanding these forms of energy and their conversion is essential. For example, when you use a battery, it releases chemical energy which is then converted into electrical energy to power devices. Similarly, when you speak, your vocal cords vibrate to produce sound energy.
Some animals, like birds, reproduce by fusion of cells.
Before a bird hatches, what protects the bird as it develops?
A. The warmth of the sun?
B. The thin shell of the egg?
C. The hard shell of the egg?
D. The nutrients from its mothers body?
The hard shell of the egg.
C the hard shell of the egg
can someone please help me with science/biology on DNA and CHROMOSOMES....and is my answer right?
Scientist have developed the atomic theory over a period of hundreds of years what will help us further the development
Increasing the ability of technology, like microscopes, to see even smaller particles.
hope this helps :)
Which best describes the relationship between temperature and dissolved oxygen in a lake?
A.
As temperature increases, dissolved oxygen increases.
B.
As temperature increases, dissolved oxygen decreases.
C.
As temperature decreases, dissolved oxygen decreases.
D.
A change in temperature has no effect on dissolved oxygen.
Answer:
B
Explanation:
Gases slightly dissolve in water and are held loosely by weak inter-molecular forces. When the water gains temperatures, the kinetic energy of the water molecules including those of the gases increase. The dissolved gas molecules are therefore able to overcome the weak forces of attraction in the water and escape through the surface.
Dissolved oxygen levels in a lake usually decrease as the temperature increases. Warmer waters hold less oxygen than cooler waters. For instance, a decrease in dissolved oxygen could happen when lake water heats up during the summer.
Explanation:In a lake ecosystem, there is a relationship between the temperature and levels of dissolved oxygen. Generally, the amount of dissolved oxygen in water decreases as the temperature increases. So, the correct answer would be 'B. As temperature increases, dissolved oxygen decreases.' Warmer waters hold less dissolved oxygen than cooler waters. This occurs because gas solubility is a function of temperature: The warmer the temperature, the less gas there will be dissolved, including oxygen.
For example, when the lake water gets heated up during the summer, dissolved oxygen levels may decrease.
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which would BEST allow a species to survive environment changes
The answer you are looking for is genetic diversity
To survive environmental changes, a species' best strategies include having high genetic diversity, the capability for sexual reproduction, and phenotypic plasticity. Proactive conservation efforts are essential to prevent extinction, especially in climate-sensitive species.
The best strategy for a species to survive environmental changes involves high genetic diversity, the ability to reproduce sexually in case of asexually reproducing species, and phenotypic plasticity. Genetic diversity enhances a species' ability to adapt to new conditions, and sexual reproduction can introduce new gene combinations that may offer better survival strategies during rapid environmental shifts. Furthermore, phenotypic plasticity, the ability of an organism to change its phenotype in response to environmental changes, plays a crucial role in survival. For example, the crystalline iceplant adjusts its water needs based on environmental availability, which has allowed it to thrive in diverse environments globally.
Conservation strategies must be proactive, allowing species to adapt at their own pace to prevent extinction due to climate sensitivity. This may include ensuring unfragmented habitats to enable species to shift their ranges in response to climate change, as fragmented habitats can prevent migration to suitable areas, leading to potential extinction.
body parts in related organisms that are structurally similar are examples of
Answer:
Homologous structures are structures that are similar in related organisms because they were inherited from a common ancestor.
Explanation:
how are atoms in sugar molecules used to form amino acid and other large carbon-based molecules?
Sugar is an organic molecule that consists of different atoms like carbon, hydrogen, and oxygen.
They belong to the family saccharide of carbohydrates.The main function of sugar in the living organism is to provide energy for performing various activities.Hydrocarbon backbones are used to build amino acids and other large carbon-based molecules.Different molecules of sugar rearrange and combine to make amino acids. For example Sialic acid, Glucosamine.The sugars like glucose, fructose, lactose are examples of simple carbohydrates.Therefore, sugar is an important backbone structure of amino acids and carbohydrates.
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Atoms in sugar molecules contain carbon, hydrogen, and oxygen, which are essential for forming amino acids and other macromolecules. Carbon's ability to form covalent bonds allows it to serve as the backbone for complex molecules like proteins.
Atoms in sugar molecules contain carbon, hydrogen, and oxygen, which are fundamental for building more complex molecules like amino acids and other large carbon-based macromolecules.Carbon atoms can form covalent bonds with up to four different atoms, allowing them to create complex chains and rings that serve as backbones for biological macromolecules.For instance, sugars can contribute carbon skeletons to form amino acids through various biochemical pathways.These amino acids then join together to form proteins, which are critical for the structural and functional components of cells.In these biochemical transformations, dehydration reactions often occur, where water is removed to join smaller molecules into larger ones. This process is vital for forming large molecules like polysaccharides, nucleic acids (DNA and RNA), and proteins from their respective monomers—simple sugars, nucleotides, and amino acids.
Inner Planets - Outer/Giant Planets
What is the sequence of outer planets, in order from the Sun?
A)
Earth - Jupiter - Saturn - Uranus
B)
Saturn - Uranus - Neptune - Pluto
C)
Jupiter - Saturn - Uranus - Pluto
D)
Jupiter - Saturn - Uranus - Neptune
It would be D and this pic should help chu too
The answer would be D. Jupiter, Saturn, Uranus, then Neptune. It couldn't be C, as Pluto is not considered a planet anymore. B can be eliminated as Jupiter comes before Saturn, And A can be eliminated because it is listing the inner planets. Hope this helps :)