Nitrogen Cycle

Question 1

How much of the earth is nitrogen?

Answer 1

78%

Question 2

Can nitrogen be written as N

Answer 2

NOOOO

Question 3

1) Nitrogen Fixation

Answer 3

Bacteria absorb N2 from the atmosphere and convert it into ammonia (NH3) then ammonium (NH4+).

Question 4

2) Nitrification

Answer 4

Ammonium (NH4+) is converted into nitrite (NO2-) & then nitrate (NO3-) by specialized bacteria

Question 5

3) Assimilation

Answer 5

Usable nitrogen is absorbed into the tissues of producers or animals that eat the producers

Question 6

4) Ammonification

Answer 6

Plants/animals die or create waste and decomposers reak down organic matter and produce ammonia which returns to the soil

Question 7

5) Denitrification

Answer 7

Specialized bacteria convert Nitrate (NO3-) into N2O then nitrogen gas (N2), which is released back into the atmosphere

Question 8

Biotic Nitrogen cycle

Answer 8

Baterica doing everything

Question 9

Abiotic Nitrogen cycle

Answer 9

Lightning or combustion conver N2 to NO3
plants using N2
Man made fertilizers can convert N2