Base your answer to the following on the above diagram. Be sure to answer ALL parts: What process is illustrated by '2'? If the complex compounds are starch, what are the simple compounds? What chemical from the body would be necessary to speed up this process? Why is the process represented by '2' necessary for humans? *

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.

b a mature ovary of a plant.