The major function of the respiratory system is to:
a. provide oxygen to the body and eliminate carbon dioxide from the body.
b. cleanse the body of toxins, poisons, and harmful chemicals.
c. maintain the digestive system of the body so that it can continue to operate.
d. give the heart the energy it needs to circulate blood.

5. in case of an emergency, once you or someone already on the scene has contacted 9-1-1, the next thing to do is:

What is the best way to use the clean water act to address the issue of dirty water and diseases that plague asmall community? a) to report the number of cases of people who havecholera symptomsb) to provide health guidelines about effects from waterborne diseases c) to enforce standards that focus on chemical dischargeinto bodies of waterd) to carry out research that investigates how dirty wateraffects human health

The best time to go swimming is: a. directly after eating b. when you are feeling rested and energetic c. when you are feeling tired and sluggish d. a half hour after eating