What caused the decline of americans health? a. farmers became factory workers b. people started traveling by train instead of horse c. people started exercising more d. both a and b

- Answer  - D) Both A and B

There should be no reason that the answer would be C. The answer is A, Farmers became factory workers (Working around smoke and in an un-healthy environment is not healthy) and B, People started traveling by train instead of horse. (Lots of smoke and more pollution)

Best of luck,

  - Ari -

                                                        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.

gynecologist i believe