You are reading an anthropologist's experiences with South American Indians. You are struck at the description of Indians chewing coca leaves because it reminds you of something you leamed in psychology
What was it?

answer; /// i believe that the correct answer is (c) the concentration of active ingredients in a medication

its c just did the test

i believe the answer would be negative peer pressure

                                                        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.