Let's think step by step! What may become unbalanced if the lungs are working too fast or too slow?
Options:
- (A) Decibels
- (B) hair on head
- (C) air pressure
- (D) gasoline levels
- (E) Acids
- (F) energy usage
- (G) brain chemistry
- (H) blood pH
The thinking starts now:
Blood pH may become unbalanced if the rate of breathing is too fast or too slow. Mammals breathe with lungs. Blood pH may become unbalanced if the lungs are working too fast or too slow. The final answer: (H).