Answer:
A. Explains how organisms change in response to the environment.
Explanation:
A scientific theory is an EXPLANATION of an aspect in the natural world. In other words, it just tells why something happens. Now it is not just a guess, it is well-supported by evidence and previous studies.
Now to knock out your other choices:
B. is wrong because:
A scientific theory does not predict. It can serve as a basis for a prediction, or what you call a hypothesis, but it does not predict an outcome.
C. is wrong because:
As mentioned earlier, a theory is WELL-SUPPORTED by evidence and previous research.
D. is wrong because:
A theory does not become a scientific law.
A scientist was born in 1995 and died in 1975. How is this possible?
Answer:
He was born in room 1995 and died in 1975. Or vise versa.
Final answer:
The question is a riddle where 'born in 1995' refers to a hospital room number, rather than a year, while 'died in 1975' refers to the year. This type of question promotes critical thinking.
Explanation:
The question, "A scientist was born in 1995 and died in 1975. How is this possible?" is likely not based on historical fact but rather is a riddle or puzzle. The answer to the riddle is that the scientist was born in a hospital room with the number 1995 and died in the year 1975. This is a common type of brain teaser that uses the ambiguity of the English language to create a seemingly impossible situation. Such questions are generally used to encourage critical thinking and problem-solving among students.
Which level of organization is pictured?
organelle
cell
tissue
organ
Answer:
organ
Explanation:
Answer:
D: organ
Explanation:
Have a good day :)
Which are deuterostomes?
A. flowering plants
B. humans
C. fungi
D. slime molds
Answer:
humans
Explanation:
TRUE or FALSE Q:Groundhogs inhabiting a meadow environment drink water and rely on plants, including clover, for food. Both the water and the clover that the groundhogs consume can be described as abiotic and biotic factors.
Answer:
TRUE
Explanation:
OKOKOKOKKOOKOKOK
Answer: yes water does not have life. It has life in it but water is not living. Therefore water is abiotic. Clovers actually respond to stimulus, move and are living. Therefore clovers are abiotic.
Explanation: I explained my answer in my answer
What does it mean when a gene codes for a given protein or trait?
Which observations would be most helpful in identifying this spider? Check all that apply.
It is shiny black.
It has a red spot on its abdomen.
It has eight legs.
It has a round, plump abdomen.
It has a hard exoskeleton.
Answer:
A, B, D
Explanation:
Important observations for spider identification include a shiny black color, a red spot on the abdomen, eight legs, a plump abdomen, and a hard exoskeleton. A red spot, especially shaped like an hourglass, often indicates a black widow spider.
To identify a spider, certain observations are most helpful. Observations such as a shiny black color, a red spot on the abdomen, the presence of eight legs, a round plump abdomen, and a hard exoskeleton would all contribute significantly to spider identification. Notably, the red spot on the abdomen is distinctive of the black widow spider, which is known for its venom that can be toxic to humans. All spiders, as arachnids, possess certain characteristics such as eight legs, which distinguishes them from insects. Distinguishing features like leg length, hairiness, and relative size of body segments can assist in classifying spiders into groups.
This is a star less than mass of the main sequence star that has exhausted all of its nuclear fuel and has collapsed to a very small size.
Answer:
White dwarf
Explanation:
These are what stars become when have exhausted their nuclear fuel. When the stars near the end of its nuclear burning stage, they expels most of their outer material thereby creating a planetary nebula in which only the hot core of the star remains.
They are stars which have less than mass of the main sequence star that has exhausted all of its nuclear fuel and has collapsed to a very small size.
9. What type of cellular respiration requires oxygen?
Answer:
Cellular respiration can occur both aerobically (using oxygen) and aerobically (without oxygen).
Explanation:
During aerobic cellular respiration, glucose reacts with oxygen, forming ATP that can be used by the cell. Carbon dioxide and water are created as by-products.
In cellular respiration, glucose and oxygen react to form ATP. As by-products, water and carbon dioxide are released.
In cellular respiration, glucose and oxygen react to form ATP. As by-products, water and carbon dioxide are released.
The three stages of aerobic cellular respiration are glycolysis (an anaerobic process), the Krebs cycle, and oxidative phosphorylation.
two parents of unknown genotype’s are crossed. All of the offspring that are produced are heterozygous round. What are the genotypes of the parents?
Answer:
RR x rr
Explanation:
To have all heterozygous offspring, both parents must be homozygous so each combination of characters is the same
RR x rr -> Rr, Rr, Rr, Rr
Does anyone understand this?
: In some breeds of dogs, black (B) is the result of the production of black eumelanin ( a fur pigment protein) and it is dominant over brown (b) or the production of brown eumelanin. If we cross a true breeding male black dog with a female brown dog, what are the phenotypes and genotypes of the F1 and F2? In order to solve the problem, follow the steps below while answering the questions.
Answer:
Gentoype of F1: all Bb
Phenotype of F1: black
Genotypes and phenotypes of F2:
1/4 BB - black fur
1/2 Bb - black fur
1/4 bb - brown fur
Explanation:
Black fur (B) is dominant over brown fur (b).
A true breeding black dog will have the genotype BB.
A true breeding brown dog will have the genotype bb.
If both of them are crossed:
BB x bb
F1 progeny: All Bb with Black fur.
At F2:
Bb x Bb
Progeny:
1 BB - black fur
2 Bb - black fur
1 bb - brown fur
Hence:
Gentoype of F1 = all Bb
Phenotype of F1 = black
Genotypes and phenotypes of F2:
1 BB - black fur
2 Bb - black fur
1 bb - brown fur
Select the correct answer.
Jon is a scientist researching the heat value of coal. Which heat measurement should he use?
A.
degrees centigrade
B.
joules
C.
degrees Celsius
D.
degrees Fahrenheit
E.
British Thermal Units (BTUs)
Answer:
d
Explanation:
Jon is a scientist researching the heat value of coal. He should degrees Fahrenheit. The correct option is D.
What is measurement methods?An object or event's attributes are quantified through measurement so that they can be compared to those of other things or occurrences.
Measurement is the way of finding a number that implies the amount of something.
Measurement, then, is the process of establishing how big or little a physical quantity is in relation to a fundamental reference quantity of the same kind.
Any fuel that burns while there is oxygen present and provides some energy. In terms of calories, joules, or calorific value, this energy is quantified.
Scientist Jon is interested in coal's ability to produce heat. He ought to use Fahrenheit.
Thus, the correct option D.
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Are the cells pictured below plant or animal cells?
a
Plant
b
Animal
Answer:
where is the picture? I can't help you without the picture...
Based on structural components, plant cells have a cell wall, chloroplasts, and a large central vacuole, making them distinct from animal cells, which lack these but contain centrioles and lysosomes. These differences are key in identifying the cell type.
Explanation:Identifying whether cells are plant or animal cells involves comparing their structural components. From the given descriptions, we can differentiate these cells based on key features. Plant cells are characterized by the presence of a cell wall, chloroplasts for photosynthesis, plasmodesmata for cell communication, and a large central vacuole that maintains cell turgidity. Conversely, animal cells are notable for their lack of a cell wall, absence of chloroplasts, and instead contain centrioles and lysosomes.
Plant cells have distinct features that set them apart from animal cells. Plant cells possess organelles like chloroplasts for photosynthesis, a large central vacuole for storage, and a cell wall for structural support. On the other hand, animal cells lack these structures and have centrioles, lysosomes, and centrosomes.
The presence of a cell wall, chloroplasts, and a large central vacuole are characteristic features of plant cells, not found in animal cells. Such structures enable plants to perform photosynthesis, provide structural support and store nutrients, respectively. In contrast, animal cells have unique components like lysosomes for waste disposal and centrioles that play a role in cell division. These differences are critical for their distinct biological functions. Therefore, identifying these components is essential in distinguishing between plant and animal cells.
What happens to Earth when it is farthest from the sun?
It moves fastest.
It stops rotating.
It moves slowest.
It stops revolving.
Answer:
slower
Explanation:
winter days shorter farther from the sun causes stuff
Some species of stick insects have wings, others are wingless. recent research indicates that wings have been gained and lost several times during the evolutionary history of stick insects. for the six species on the evolutionary tree, which hypothesis require a lower total number of wing gains and wing losses?
Answer:
It is a hypothesis that explains the origin of evolutionary reversions.
Explanation:
A phylogenetic tree may indicate that genes required for forming anatomical structures such as wings are not completely lost and they are activated many times during the evolution.
18. Why does your body fight infection better the second time?
a. B cells need less time to make antibodies.
b. Antibodies work better over time.
c. B cells don't exist the first time
d. Helper T cells don't call B cells the first time
i've never been able to answer this and i don't know if i worded this right but i hope you understand...
There’s a hummingbird hovering in a closed box, if the box’s elevation jolts slightly, will the elevation of the bird inside it change too?
(this has to do with like air molecules and how they react with the bird wings other molecules)
Answer:
I think that the elevation of the bird will not change because the bird is flying and has not landed yet so it will not affect the elevation of the bird and it wont affect the box's weight
Explanation:
The elevation of the hummingbird inside the closed box will not change when the box's elevation jolts slightly. This is due to the concept of inertia.
Explanation:In this scenario, the elevation of the hummingbird inside the closed box will not change when the box's elevation jolts slightly. This is because of the concept of inertia, which states that an object at rest will stay at rest unless acted upon by an external force. Since the hummingbird is already hovering inside the closed box, it is not in direct contact with the walls of the box or any external force, so its elevation remains the same.
The air molecules inside the box might be affected by the jolt, they will exert pressure on the walls of the box which in turn will affect the box's movement. However, the hummingbird, being a separate entity, will not experience any change in its elevation.
It is important to note that when objects are contained within closed systems, their motion is independent of the motion of the container.
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what are possible disadvantages to having the 6 fingers.
Answer:more stability
Explanation:
PLEASE ANSWER I DON'T HAVE MUCH TIME 56 PTS
Which type of plant is small and lives in a wet environment?
club moss
hornwort
fern
horsetail
Answer:
A
Explanation:
In fungi, which is a disadvantage of asexual reproduction as compared to sexual reproduction?
Asexual reproduction requires ideal environmental conditions.
Asexual reproduction results in offspring that are genetically unique.
Asexual reproduction requires the production of spores.
Asexual reproduction results in fewer offspring.
Answer:
A
Explanation:
The process of land becoming a desert because there are no plants to help hold and cycle water. a erosion b . weathering C. desertification d. soil conservation
.
Answer:
Option-C
Explanation:
Desertification refers to the formation of barren land from the arid land due to many factors which could be climatic or anthropogenic. The climate factors include no rainfall, arid conditions, less water and water bodies, overgrazing by animals and many others.
As a result of these factors, the plants die or are unable to hold the soil. This leads to loosening of soil which causes soil erosion. This converts the fertile land into infertile land and the land becomes barren.
Thus, desertification is the correct answer.
Answer:
Answer
Explanation:
This relationship between the bee and the flower is an example of _______.
Answer:
Symbiotic Mutualistic relationship
Explanation:
The bees get honey, and the flowers get to reproduce through their pollen being spread by the bees. Both parties benefit.
carbon is present in the atmosphere as
Answer:
co2
Explanation:
Genes are strands of ________ found on chromosomes in the nucleus of a living cell.
A
mutations
B
DNA
C
minerals
D
cells
5 factors affecting the rate of breathing in human beings
Answer:
There are many factors that affect the respiratory rate: age, gender, size and weight, exercise, anxiety, pain, the effect of some medicines, smoking habits and excitement level are among them.
Explanation:
Breathing is a necessary function for human beings. It supplies oxygen for a process called cellular respiration, which is how cells manufacture the energy they need for their life functions. There are lots of things that can affect the rate of breathing in humans. Exercise is one of those things, particularly aerobic exercise. Aerobic exercise is any exercise that causes the person to breathe more, such as running, jogging, playing basketball, football, running track, or playing soccer. Another factor that can influence breathing rate is allergic reactions to stimuli from the environment, such as pollen. This can inflame the passageways leading to the lungs, making them smaller, requiring more air. Smoking is a habit that can influence the development of lung cancer, which in turn influences the rate a person breathes. Nervous conditions and reactions to stimuli also influence the breathing rate, such as the famed "fight or flight" syndrome.
Five factor that affect the rate of breathing are injuries, exercise, emotion, mood, and Lung elasticity.
Five factor that affect the rate of breathing are,
Age: of a person breathing rate of a child 12 - 16 per minute that is relatively slower than an adult. Exercise: increase the rate of breathing due to the elevated need of oxygen in the muscle.Emotion: the mental stress is found to be increase the rate of breathing.Lung Elasticity: infections in the lungs decrease the lung elasticity which increase the rate of breathing.Injuries: increase the rate of breathing as body oxygen demand increase.Therefore, injuries, exercise, emotion, mood, and Lung elasticity are the five factor that affect the rate of breathing in human beings.
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Explain how animals like and plants like protists are similar and different
Answer:
Animal-like protists and plant-like protists are both eukaryotic and live in moist environments. All animal-like protists are heterotrophic and eat other organisms. Most plant-like protists are autotrophic. Some can be both autotrophic and heterotrophic, while a few are completely heterotrophic. All animal-like protists are unicellular, while plant-like protists can be unicellular, multicellular, or live in colonies. Most animal-like protists can move, while only some plant-like protists can move.
Explanation:
Plant-like protists and plants are both autotrophic, using photosynthesis, with examples such as algae. Protists differ from plants in their simpler structures and more variable life cycles. Protists play vital ecological roles as primary producers, decomposers, and sources of nutrition in food webs.
Plant-like protists and plants share the characteristic of being autotrophic, meaning they both use photosynthesis to convert sunlight into energy. An example of multicellular plant-like protists are algae, which also contain chloroplasts like plants. However, plant-like protists are different from true plants in that they do not have a complex structure of roots, stems, and leaves, and their life cycles can be more variable. Many of them are unicellular or form simple colonies.
Ecological Importance of Plant-like Protists
Plant-like protists play a critical role in their ecosystems, serving as primary producers and thus forming the base of the food web in aquatic environments. They are responsible for producing a significant portion of the world's oxygen, and they can also impact the carbon cycle through their photosynthetic activities.
Diversity among Protists
Protists are a diverse group of organisms that can be plant-like, fungus-like, or animal-like in nature. Fungus-like protists such as slime molds absorb nutrients from decaying matter, while animal-like protists may actively hunt or ingest their prey. Protists can also reproduce in a variety of ways and can include pathogenic species that cause diseases in humans and plants. Additionally, protists serve as an important food source and some are known as saprophytes, playing a role in the decomposition process.
6. Which of the following is NOT an environmental benefit of plants?
A. Provide shade
B. Increase erosion
C. Provide cooler temperatures
D. Filter air
Answer:
the answer is increase erosion
Explanation:
Plants do not increase erosion instead they reduce it
The option that is NOT an environmental benefit of plants is B. Increase erosion. Plants provide shade, cooler temperatures, and filter air, but they generally prevent erosion, not increase it.
Explanation:The answer to which of the following is NOT an environmental benefit of plants is B. Increase erosion. Plants have numerous environmental benefits, some of which include:
A. Provide shade - Trees and plants offer shade, which can cool down areas and provide protection from the sun.C. Provide cooler temperatures - Through the process of transpiration, plants release water into the atmosphere, which helps cool the environment.D. Filter air - Plants absorb carbon dioxide and release oxygen, and they can also filter out pollutants from the air.However, plants generally do not increase erosion; in fact, they often prevent erosion by stabilizing the soil with their root systems. Therefore, option B, Increase erosion, is the correct answer as it is not an environmental benefit of plants.
what other types of anatomical evidence do scientists use to determine the evolutionary relationships of animals?
Answer:
Evidence of evolutionary relationships include: similarities in body structure, fossils, protein structure, similarities in DNA, and similarities in early development. Know how fossils are formed, named, and how scientists determine fossil age. Most fossils form when organisms die and are buried in sediment.
Explanation:
Black truffles are a unique type of fungi that are highly prized by chefs and food enthusiasts throughout the world. Which characteristic is seen in truffles but not in common mushrooms?
lack a reproductive phase
contains hyphae
has spores contained in ascus
has spores contained in basidia
Answer:
has spores contained in ascus
Explanation:
Ascospores with honeycomb surface decoration may be seen under a microscope; each sac or ascus frequently contains two of these spherical spores. The correct answer is c) has spores contained in the ascus.
What is a black truffle?A fruiting fungus that is tasty is the black truffle. They are a favorite food in France and are highly well-liked there. In order to create some of the most beautiful gourmets, they are both grown and harvested from natural sources. They are one of the most valued products for commerce and are often gathered in the autumn.
Fungi, which include yeasts, molds, and mushrooms, are eukaryotic organisms that play a major role in environmental decomposition. Ascomycota is the phylum in which the flavorful edible fungus known as the black truffle resides. They are expensive and are often found in southern Europe. The ascus, a sexual spore-bearing cell containing ascospores, is the primary characteristic of the Ascomycota. Black truffles have a spherical form, a skin color of black-brown, and little cusps that resemble pyramids.
Numerous asci (spore-bearing cells) and tightly woven hyphae (a long filament-like structure) are present. Each ascus includes spores known as ascopores, which are unique to fungi included under the ascomycetes order. The phylum of Basidiomycota includes mushrooms. Additionally made of hyphae, they reproduce sexually by forming special cells called basidia, which produce spores known as basidiospores.
Therefore the correct answer is c).
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In what two ways do plants keep our climate stable over time?
Answer:
Through transpiration and use of carbon dioxide (green house gas)
Explanation:
Plants help in making the climate stable in following two ways –
a) Temperature offsetting – Plants take in carbon dioxide from atmosphere and thereby reduces atmospheric carbon. Due to reduction in greenhouse gases, the temperature reduces.
b) Moisture regulation – Plants transpire through their leaves. Through transpiration, they release water as vapor and cool down the air. The higher the vegetation , the more is the transpiration.