The answer to your question is <span>B. Natural selection acted on the variation that was present in the population.
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Answer:
a the body shivers to generate heat
An autotroph is an organism that can build its own food
Answer:
The conditions that would cause a molecule to diffuse from outside to inside of a structure is a higher concentration of that molecule outside and the presence of a semipermeable membrane that facilitates its passage.
Explanation:
The process by which a molecule passes from a place where it is more concentrated where its concentration is lower - crossing a semipermeable membrane - is called simple diffusion.
<u>Simple diffusion is a mechanism that does not require energy and responds to a concentration gradient</u>. When a molecule is more concentrated in a space it can enter the space where it is less concentrated
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The cell membrane is an example of a semi-permeable membrane where the simple diffusion process occurs.
Learn more:
Simple diffusion brainly.com/question/1798156
i believe the answer u might be looking for is number 3. plants breathe carbon dioxide, so an increase in plant life could help aid world hunger.
