The answer you are looking for is the heart and lungs.the heart pumps blood which we also kinda need in order to breath and the lungs produce oxegen trew the body which allow us to breath.
hope i helped
Answer:
The heavy person
Explanation:
When something has more mass gravity pulls it down faster. Here's an example, a brick and a feather a brick falls fast a feather floats down.
Mmmmmm mercury sexiest planet thanks for the pic
