What are the two things that happen as the blood passes through the lungs

oxygen travels from the tiny air sacs in the lungs, through the walls of the capillaries, into the blood. At the same time, carbon dioxide, a waste product of metabolism, passes from the blood into the air sacs. Carbon dioxide leaves the body when you exhale.

Explanation:

answer; ///i believe the correct answer is (aids) acquired immune deficiency syndrome;

there are so many examples for that in different areas, like biology experiment carried out in our lab recently.

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