In most cases, cardiopulmonary arrest in infants and children is caused by: select one: a. a drug overdose. b. a cardiac dysrhythmia. c. severe chest trauma. d. respiratory arrest.

1. efficient use of space

2. elimination of groundwater contamination

3. energy generation

4. lower carbon footprint

bal is blood alcohol level. bac will normally be higher in a person with more body fat. so the answer to your question would be, as body fat decreases, the increasing rate of bal decreases.  

answer( increase) their individual contractile activity;