Blood pH may become unbalanced if the rate of breathing is too fast or too slow, and mammals breathe with lungs. Given these facts, what may become unbalanced if the lungs are working too fast or too slow among the following options:
- Decibels
 - hair on head
 - air pressure
 - gasoline levels
 - Acids
 - energy usage
 - brain chemistry
 - blood pH


 

        blood pH 