Why are the carbon cycle, the phosphorous cycle, the water cycle, and the nitrogen cycle all considered to be biogeochemical cycles? a.)because all these cycles include the organisms inhabiting water, land, and air. b.)because all these cycles include living organisms, the biosphere, and the chemical factors in them. c.)because all these cycles include nonliving organisms, the atmosphere, and the physical factors in them.

bacteria could be both, harmful and to us. harmful bacteria could make us sick and probably even by getting the chances of getting a disease, but good bacteria fight it off with your immune system. there is always bacteria everywhere we go. we need to make sure to wash our hands after using the restroom, before eating, after eating, after petting an animal too. so you see, bacteria is everywhere and is harmful or . i hope this . : ) : ) : )