The answer to fill in the blank would be B) aka the second option because food gives our body energy and serves as fuel to recharge to give us energy to do things.
Answer:
the answer b adrenal glands common knowledge
Answer:
Natural selection is a process where organisms that are better adapted to an environment will survive and reproduce. This means that the advantageous alleles of this variant organism are passed on to offspring. Over many generations, the process of natural selection leads to evolution occurring.
Explanation:
this should give you your answer but if not please tell me
