Which statement best represents the word nutrition? question 1 options: a chemical substance in food that maintain the body. the study of how the body uses nutrients in the foods you eat. a unit used to measure the energy value of food. adding back nutrients to foods that have been lost during processing and how they affect the body.  save

answer: the answer is b

step 1: nitrogen fixation- conversion of atmospheric no₂ into forms useful to plants by lightning, bacteria, and cyanobacteria.

step 2: nitrification-process of converting ammonia to nitrite or nitrate.

step 3: assimilation-plant roots absorb new form of nitrogen.

step 4: ammonification-conversion of organic nitrogen to ammonia by bacteria involved in decomposition.

step 5: denitrification-bacteria turns the decomposed matter back into n₂o, which is released into atmosphere; repeat cycle.