Biology, 28.04.2021 17:40, dlatricewilcoxp0tsdw

At high altitudes, air is less dense than at sea level because of decreased air pressure. This means that a person who ascends to high altitudes takes in fewer oxygen molecules per breath. Describe and explain an immediate response that occurs in the circulatory system when a person first reaches high altitudes. Use vocabulary from class.

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At high altitudes, air is less dense than at sea level because of decreased air pressure. This means...