Question

questions

1. nitrogen gas enters the soil in a process called

and is done by the bacteria called

1. and change the nitrogen into

ammonium. in a process called

1. the bacteria turn ammonium into nitrites then into

nitrates by the process

1. plants take in nitrates by the process
2. bacteria convert back into a

gaseous nitrogen and puts it back into the atmosphere in a
process called

Explanation:

1. Nitrogen - fixing is the process by which nitrogen gas enters the soil and is done by nitrogen - fixing bacteria.
2. Ammonification is the process where decomposers change nitrogen - containing organic matter into ammonium.
3. Nitrifying bacteria convert ammonium into nitrites and then nitrates through nitrification.
4. Plants take in nitrates by absorption.
5. Denitrifying bacteria convert nitrates back into gaseous nitrogen through denitrification.

Answer:

1. Nitrogen - fixing; nitrogen - fixing bacteria
2. Decomposers; ammonification
3. Nitrifying; nitrification
4. Absorption
5. Denitrifying; nitrates; denitrification