Answer:
sister chromatids separate and begin to move towards the pole of the cell during anaphase.
Answer:
Birth is an example of a normally occurring positive-feedback mechanism.
Answer:
C
Explanation:
0.20-0.10=0.10
because the population was decreased
The atria of the heart merely need to allow blood to flow into the ventricle, and therefore aren't very muscular.
The ventricles of the heart need to actually pump blood to the rest of the body, whether to the lungs or the the rest of the body.
