Question

State two ways by which fixation of nitrogen occur naturally.

Answer 1

Nature of Nitrogen :

Nitrogen fixation: It is a chemical process by which inert Nitrogen molecule with triple bond is converted into Ammonia or related nitrogenous compounds.

1.By Soil microorganisms: Soil microorganisms like bacteria, fix nitrogen into nitrogenous compounds making the soil fertile.

2.By lightning: Lighting provides the energy needed for Nitrogen to react with Oxygen and the formed nitrogenous products enter the soil through rain.

So the two natural ways of Nitrogen fixation are, by soil organisms and lightning.