Question

during heavy exercise the breathing rate increases due to (a)lack of carbon dioxide (b) lack of oxygen (c) abundance of oxygen (d)none of these​

Answer 1

lack of oxygen

Explanation:

bcoz the correct answer is because absence of oxygen that time our heart pumps really fast

Answer 2

Answer:

When you exercise and your muscles work harder, your body uses more oxygen and produces more carbon dioxide. To cope with this extra demand, your breathing has to increase from about 15 times a minute (12 litres of air) when you are resting, up to about 40–60 times a minute (100 litres of air) during exercise.

ans=( b) lack of oxygen

Explanation:

is the right answer

please please pleasr

please follow me