Permitting the exchange of nutrients and gases between the blood and tissue cells is the primary function of capillaries. Capillaries are the smallest blood vessels , they are only one cell thick, and they act as sites of the transfer of oxygen and other nutrients from the bloodstream to the body tissues. Additionally, they also collect carbon dioxide, waste materials and fluids for return to the veins.
Answer:
It’ll be answer D
Explanation:
Just did it on edg 2020 it’s right
Well, if you look at the scientific process, the first step is to have a question to base it on.
Genetic drift scientific explanarions are based on empirical data and evidence
