Why are bacteria a necessary part of the nitrogen cycle? . . a. living things cannot use atmospheric nitrogen.. . b. living things cannot use the nitrogen in plants.. . c. bacteria are the main nitrogen reservoir.. . d. bacteria are the main nitrogen transpirators..

Asap many people try to eliminate fat from their diets which is one reason it is necessary for humans to eat fat a) fat is the only way to get energy b) every cell in the body must contain fat c)fat stores less energy than polysaccharides d) saturated fats make blood vessels healthier

Which of these outcomes is a negative impact of postindustrial societies on the environment? a. nomadic ways b. overpopulation c. overgrazing d. resource renewal

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