Biology, 15.07.2019 21:00, lekylawhite16

Cells need oxygen to make energy. oxygen-rich blood is transported to tissues. when the oxygen is dropped off, it needs to move through structures that are small and thin. which vessels allow for oxygen movement into the tissues? arteries veins heart capillaries

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Cells need oxygen to make energy. oxygen-rich blood is transported to tissues. when the oxygen is dr...