Endocytosis is when a a cell engulfs material into the cell and exocytosis a form of waste where the cell gets rid of materials.
Answer:
Gas exchange between tissues and the blood is an essential function of the circulatory. The air contains oxygen that crosses the lung tissue, enters the bloodstream, and the alveoli are in direct contact with capillaries of the circulatory system. As water flows over the gills, oxygen is transferred to blood via the veins.
Explanation:
Answer:
An arterie is a vessel that carries blood away from the heart, and a vein carries blood to the heart
Explanation:
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The answer is “Variation that decrease reproductive success are more likely to be passed on.”
