What kind of bond forms when atoms in a molecule do not share their electrons equally a. an ionic bond
b. a metallic bond
c. a polar bond
d. a hydrogen bond

A polar bond

Explanation:

sorry, but you do not have posted the diagram.

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.