Which of these tasks would a hydrologist be most likely to perform? A. Determining the species of a recently collected specimen

B. Estimating the age of recently discovered fossils

C. Estimating the amount of groundwater in an aquifer

D. Determining the best method to extract underground oil

answer: all : )

explanation:

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.

since there are no options posted i'll give you a few examples.

a dolphin's flipper, bird's wing, cat's leg.