A mammals need for oxygen effects their heart rate because there could be some cases where they're in lack of oxygen causing them to be literally ' out of breath ' . Like climbing a mountain. The higher you go the less oxygen.
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Answer:
V i think
Explanation:
Mitosis is the process by which a cell (more strictly the nucleus of a cell) divides into two.
c
some plants use this as a way so they could pure insect to trap them and digest them
