Pictured here is the nitrogen cycle. The organisms that are responsible for
nitrification are most likely...

Option A, Bacteria

Explanation:

Nitrifying bacteria is a group of aerobic bacteria that converts ammonia in soil into nitrates so that it can be easily taken up by the plants. So basically, in this entire conversion bacteria’s of two distinct group are used – a) bacteria that convert ammonia to nitrites (such as Nitrosomonas, Nitrosospira, Nitrosococcus, and Nitrosolobus ); and b) bacteria that converts nitrites to nitrates

Hence, option A is correct

i guess because there isn't enough love going around. < 3

well, since there is no answer choices, i will give an answer on how it works : )

the two objects are placed together. energy will always be transferred from the hotter object to the cooler object until they are equal. hope this is close to one of the answer choices : )