During exercise there is an increase in physical activity and muscle cells respire more than they do when the body is at rest. The heart rate increases during exercise. The rate and depth of breathing increases - this makes sure that more oxygen is absorbed into the blood, and more carbon dioxide is removed from it.
Answer:
A
Explanation:
Plz mark brainliest ᕕ( ᐛ )ᕗ
Carnivores. Herbivores, on the other hand, prey on plants.
9.organ system, 10. organ level I guess.
Buffers in our blood are able to neutralize changes in the bloods pH.
