If blood acidity may become unbalanced if the rate of breathing is too fast or too slow, then what may become unbalanced if the rate of breathing is too fast or too slow?

Answer choices:
- meiosis
 - rain levels
 - photosynthesis
 - blood acidity
 - an organism's body
 - Veins and arteries.
 - kinetic energy
 - swamp vegetation

 

    blood acidity      