Question

level 2 q1 the process by which ammonium gets changed into nitrates by bacteria is called a. denitrification b. nitrogen fixation c. eutrophication d. nitrification
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
level 2 q3 what is ammonification? a. the formation of ammonium from nitrogen b. the formation of ammonium from nitrates c. the formation of ammonium from dead animals and plants d. the formation of nitrates from ammonium
level 2 q4 which process in the nitrogen cycle takes extra nitrogen from the soil and puts it back into the air? a. denitrification b. assimilation c. fixation d. eutrophication

Explanation:

• Q1: Nitrification is the process where bacteria convert ammonium into nitrates.
• Q2: Nitrogen - fixation is the process of converting nitrogen gas into inorganic nitrogen compounds.
• Q3: Ammonification is the formation of ammonium from dead animals and plants as decomposers break down organic matter.
• Q4: Denitrification is the process in the nitrogen - cycle that takes extra nitrogen from the soil and returns it to the air as nitrogen gas.

Answer:

Q1. D. Nitrification
Q2. B. Nitrogen Fixation
Q3. C. The formation of ammonium from dead animals and plants
Q4. A. Denitrification