Question

level 2
q2
the process through which nitrogen gas
is converted into inorganic nitrogen
compounds is called
a. denitrification
b. nitrogen fixation
c. eutrophication
d. nitrification

Explanation:

The question asks for the process converting nitrogen gas ($N_2$) to inorganic nitrogen compounds. Denitrification reverses this (inorganic to $N_2$), eutrophication is nutrient overloading, nitrification converts ammonia to nitrates. Nitrogen fixation specifically describes $N_2$ conversion to usable inorganic forms.

Answer:

B. Nitrogen Fixation