Answer:
A) a variable that is kept constant in an experiment
This is because particles are close enough that they can slide past each other, which makes liquid pourable. In a solid state, the particles of this element look like this
During the Green Revolution pesticides
were
A. overused
B. all organic
C. used sparingly
D. all natural
Answer: A. overused
Explanation:
A scientist hypothesized that when two pea plants, both having the genotype all of the offspring would have at least one dominant allele for either shape or color. Which conclusion is supported by the data in the dihybrid cross above?
Answer:
The conclusion is incorrect.
Explanation:
There is a chance that the offspring may have the genotype rryy, in which it has no dominant alleles.
What does the receptor protein do?
stops things from entering into cell
helps cell self destruct when necessary
Receives chemical signals from the brain.
helps the flow of blood
Answer:
the answer is Receives chemical signals from the brain.
Explanation:
i took the quiz have a good day
Why should we see the sticks motion well before we see its color?
Answer:
the surface of an object reflects some colors and absorbs all the others.correct me if i'm wrong :)
4. Is the sugar in the nucleotide to the right deoxyribose or ribose? How do you know?
Answer:
The pentose sugar in DNA is called deoxyribose, and in RNA, the sugar is ribose.
Explanation:
Natural selection, adaptations, genetic variation, and population evolution are all related in terms of changes in phenotypes over
time. Evaluate which statement appropriately describes the relationship between the concepts of natural selection, adaptations,
genetic variation, and population evolution and select the best choice.
A)
8)
Genetic variation exists in a population. Some of the genetic variation
results in different phenotypes. The phenotypes that enhance survival are
called adaptations. Individuals with well-adapted phenotypes are more
Likely to survive and reproduce, leading to population evolution over
generations.
Adaptations exist in certain individuals in a population. The increase in
adaptations causes an increase in genetic variation. The adaptations that
enhance survival lead to larger populations, which further increases
genetic variation. Individuals with well-adapted phenotypes are more
Likely to survive and reproduce, leading to population evolution over
generations.
Genetic variation is high in a population, but random events cause it to
decrease. Populations with fewer individuals and lower genetic diversity
are able to undergo natural selection when selective pressures are high.
The increase in selective pressure causes an increase in adaptations that
are better suited for survival This results in an evolutionary change of a
population
Selective pressures exist in nature and cause changes in a population.
Populations with high selective pressures have higher rates of genetic
change, leading to an increase in genetic variation, Increased genetic
variation leads to some individuals having well-suited adaptations. The
presence of these new adaptations is evidence that the population has
changed, or undergone evolution
o
D)
Answer:
A is the answer
Explanation:
I'm just guessing
Genetic variation exists in a population. Some of the genetic variation results in different phenotypes. The phenotypes that enhance survival are called adaptations. So, the correct option is A.
What is Genetic variation?Genetic variation among members of the same species is called genetic variation. This variation may be due to variations in gene expression, DNA sequence and epigenetic changes. Mutation, genetic recombination, and genetic drift are causes of genetic variation, which can be altered by environmental variables including exposure to chemicals or climate changes.
Genetic diversity is important because it gives natural selection a starting point to work from, helping organisms to adapt and change over time. There is genetic diversity within a population. Different phenotypes are the result of some genetic variation. Adaptations are traits that improve survival.
Therefore, the correct option is A.
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Your question is incomplete, most probably the complete question is:
Natural selection, adaptations, genetic variation, and population evolution are all related in terms of changes in phenotypes over time. Evaluate which statement appropriately describes the relationship between the concepts of natural selection, adaptations, genetic variation, and population evolution and select the best choice.
1. Genetic variation exists in a population. Some of the genetic variation results in different phenotypes. The phenotypes that enhance survival are called adaptations. Individuals with well-adapted phenotypes are more likely to survive and reproduce, leading to population evolution over generations.
2. Adaptations exist in certain individuals in a population. The increase in adaptations causes an increase in genetic variation. The adaptations that enhance survival lead to larger populations, which further increases genetic variation. Individuals with well-adapted phenotypes are more Likely to survive and reproduce, leading to population evolution over generations.
3. Genetic variation is high in a population, but random events cause it to decrease. Populations with fewer individuals and lower genetic diversity are able to undergo natural selection when selective pressures are high. The increase in selective pressure causes an increase in adaptations that are better suited for survival This results in an evolutionary change of a population.
4. Selective pressures exist in nature and cause changes in a population. Populations with high selective pressures have higher rates of genetic change, leading to an increase in genetic variation, Increased genetic variation leads to some individuals having well-suited adaptations. The presence of these new adaptations is evidence that the population haschanged, or undergone evolution.
This shows a cell in a
A hypertonic
B isotonic
C hypotonic
[tex]\huge \bf༆ Answer ༄[/tex]
The Correct choice is ~
A. hypertonic solutionIn a hypertonic solution, the concentration of liquid is higher in the solution as compared to that of concentration in the cytoplasm of cell, Therefore Osmosis takes place, causing the liquid present in the solution to move in the cell, and hence inflammation/ swelling occurs.
I hope it helped ~
Which of the following human actions negatively affect the water cycle by increasing evaporation?
Answer: Hydroelectricity
Explanation: None Sorry
Burning of fossil fuels adversely impacts on the water cycle that adversely affect the climate on Earth.
Human activity such as the burning of fossil fuels in vehicles and burning of wood for cooking have adverse effect on the earth's atmosphere. This burning of fossil fuels increase the temperature of the earth leads to global warming.
Raising the Earth's temperature means that there is an increase of evaporation, melting of glaciers and sea ice which imbalance the water cycle leads to flood and drowning of coastal regions of the earth so we can conclude that burning of fossil fuels adversely impacts on the water cycle that adversely affect the climate on Earth.
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Which of the following are consequences of the Dust Bowl of the 1930s?
I. Banks extended loans to farmers to help rebuild impacted area
II. New policies to prevent the dust bowl from happening again
III. Mass migrations and widespread poverty and lack of food
I only
III only
I and II
II and III
Answer:
I think it is the first one
Explanation:
I
What do biologists call the specialized cells in the nervous system that detect heat, pressure, and other environmental stimuli? A. first responders B. mitochondria C. receptors D. organelles
Answer: Receptors.
Explanation: Receptors. Receptors are groups of specialised cells. They detect a change in the environment stimulus. In the nervous system this leads to an electrical impulse being made in response to the stimulus.
Receptors are the specialized cells in the nervous system that detect heat, pressure, and other environmental stimuli.
What are receptors?Receptors are proteins, usually cell surface receptors, which bind to ligands and cause responses in the immune system, including cytokine receptors, growth factor receptors and Fc receptor.
Moreover, receptors are bound up with functions such as cell activation, cell adhesion and signaling pathways. These functions play a role with the help of receptors.
Therefore, cell activation including T cells, dendritic cells, B cells, granulocytes and NK cells, is an important process in innate and adaptive immune system.
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Why are Flowers considered as the reproductive part of a plant
Answer:
because it houses the male and female parts of the plant which produce the male and female gametes
Answer:
Flowers are called reproductive structures of plant as they contain both male and female parts which reproduces to produce pollen grains and eggs. Each of them fertilizers and produces embryo which eventually produces new plant.
