Which method will most accurately determine the diversity of an ecosystem ?
a. verify the keystone species, and identify which species depend on it.
b. count the number of species, and determine their relative abundance
c. weigh all the the species, and measure they total biomass
d. determine what each species eats, and identify its place in a food web

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.

is it multiple choice?

the answer u all are looking for is 4000000000000000000000 million years.