Question

Fill in the missing steps of nitrogen cycle.
a. Nitrogen present in atmosphere.
b. Lightning and Rhizobium bacteria can ________ this nitrogen into the soil.
c. Atmospheric nitrogen gets converted into _________ and __________ compounds.
d. The above two compounds are then utilized to make ___________ , which finally forms
proteins in the plant body.
e. These plants are then eaten by the animals.
f. After the death of plants and animals, they get decomposed in soil and the body protein is
converted back to ___________ into the atmosphere.

Answer 1

a. nitrogen gas

b.increase

c. oxide and trioxide

d. nitrates

f. nitrogen

Answer 2

Answer:

1.fix 2.nitrogen fixing bacteria and blue green algae 3.nitrogeus compound 4.gaseous nitrogen