Worth 50 mr. carpenter's class noticed workers spreading fertilizer on the school lawn. which investigation would best determine whether the fertilizer harms earthworms in the lawn? question 1 options: a) instructions on fertilizer use b) a classification key of earthworms c) observation of subsequent lawn growth d) a controlled experiment with earthworms

yes you are doing it right great gob

explanation:

the correct 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.