Answer:
Differential reproduction is called the one that occurs as a result of the differences between the individuals that make up a society or sample, where it is those with comparative advantages who manage to reproduce, while those who do not have said advantages tend to die out. It is, in short, a practical application of Charles Darwin's theory of natural selection.
Thus, if there is an overpopulation of a certain species, a series of effects will occur (such as the scarcity of resources, the lack of living space, etc.) that will tend to gradually decrease the population to return to an ideal number of individuals. In this aspect, differential reproduction will be applied, being able to reproduce those that have comparative advantages over the rest, which will inevitably become extinct.

Diffusion refers to the random motion of particles from a medium of higher concentration to a medium of lower concentration.
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Answer:
I would type it up, but I decided to insert a picture.
Explanation:
Your answer Would be Glucose Because it is a reactant in the process of cellular respiration when Glucose+oxygen= carbon dioxide and water to make ATP
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I am positive it is C, so so so sorry if I’m wrong but it should not be