Question

When $C{O}_2$ concentration in the blood increases, breathing becomes -

• A. Shallower
• B. There is no effect on breathing
• C. Faster
• D. Slow and deep

Answer 1

The correct option is C

Faster

Breathing exchanges oxygen and carbon dioxide between the body and the environment. An increase in $C{O}_2$ levels lead to an increase in ventilation that is, breathing becomes faster.