c) Fill the blanks which is labelled as (A), (B), (C) (D) in the given figure. Atmospheric nitrogen Fixed by с D Excretion and decomposition B anos do Otocad plans Natronan comerudsathe sea
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The above cycle is Nitrogen cycle that occurs in the environment.
The Nitrogen which is present in the atmosphere cannot be taken directly from the trees and plants. There are some bacteria and blue-green algae present in the soil which helps atmospheric nitrogen to transform itself into nitrates and nitrites.
Below are the necessary missing components which help in fixing this -
(a) Nitrogen is fixed by lightening.
(b) Blue-Green algae and nitrogen fixing bacteria fixes the atmospheric nitrogen.
(c) Due to death and excretion nitrogenous waste are released in the soil
(d) Bacteria help compounds of nitrogen to transform into gaseous state (denitrification)
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