Shayna and her fiancé are both in the military, and they can only spend time together every other month. Someday they plan to have a family, but not right now. They are looking for effective birth control that is also inexpensive and widely available. Which method should they investigate? Why? Natural Family Planning, Condoms, IUD, Pill, Implant or Emergency Contraception

creating amino acids is the answer

                                                        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.