(A) Mitochondria, I believe.
I think the correct answer from the choices listed above is option A. The function of arteries, veins, and capillaries in the circulatory system is that a<span>rteries generally carry oxygen-rich blood away from the heart; veins generally carry oxygen-depleted blood back to the heart; capillaries deliver blood to individual cells.</span>
Answer:
it increases oxygen levels and decrease carbon dioxide levels
Food webs with fewer species are more sensitive to the loss of species and ecosystem disturbances
