The brain is incorrect. Its the nucleus (the brain is an organ not a organelle)
hope that helps :)
Answer:The respiratory system helps create sound that enables humans to communicate with each another.
Explanation:
<span>biological </span>evolution<span> is the process of change by which new species develop from preexisting species over time; in </span>genetic terms<span>, </span>evolution<span> can be defined as any change in the frequency of alleles in populations of organisms from generation to generation.</span>
2. to keep the body's internal environment in balance
