Respuesta :
Answer:
It quickens
Explanation:
Your heart rate increases with an increase in activity, bringing more oxygen into the blood; this increase causes you to breath in more air than you would when your body is in a resting state.
Answer:
It quickens
Explanation:
Your heart rate increases with an increase in activity, bringing more oxygen into the blood; this increase causes you to breath in more air than you would when your body is in a resting state.