Athletes often use whey protein products to prepare for competition because a. whey provides amino acids that are more quickly digested and absorbed b. the essential amino acids in whey can increase energy and enhance performance. c. proteins to increase muscle size. d. whey is a complete protein with branched-chain amino acids that stimulate energy metabolism e protein supplements provide superior nutrition to meals of regular foods.

                                                        water

a colorless, transparent, odorless, tasteless liquid that forms the seas, lakes, rivers, and rain and is the basis of the fluids of living organisms.

                                                        halon  

any of a number of unreactive gaseous compounds of carbon with bromine and other halogens, used in fire extinguishers, but now known to damage the ozone layer.

                                                  dry chemical

extinguishing agent used on class a, class b, and class c fires.

                                                  carbon dioxide

a colorless, odorless gas produced by burning carbon and organic compounds and by respiration. it is naturally present in air (about 0.03 percent) and is absorbed by plants in photosynthesis.