Nitrogen Cycle

Question 1

Nitrogen-fixing bacteria

Answer 1

Absorb nitrogen from the air and trapped in soil and convert it into ammonium

Question 2

Ammonifiers

Answer 2

take organic wastes convert it into ammonia.
still not usable, unless you’re a lucky legume

Question 3

Nitrifying bacteria

Answer 3

convert ammonia into nitrites (NO2-)
then into nitrates (NO3-).

Question 4

Denitrifying bacteria

Answer 4

Nitrates (NO3-) to the atmosphere (N2)