Blood pH may become unbalanced if the rate of breathing is too fast or too slow, and aerobic activities are exercises that cause deep breathing and a fast heart rate. Given these facts, what can cause blood pH to become unbalanced among the following options:
- aerobic activities
 - h2o
 - the sun
 - Heavy rains
 - plasma
 - Dehydration
 - smoking cigarettes
 - cloudy and rainy weather


 

 aerobic activities        