Question

define nitrogen fixatation

Answer 1

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the process where the atmospheric nitrogen is converted into nitrogenous substance by rhizobium bacteria is called nitrogen fixation.
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it is very important as it increases the nitrogenous content in soil for the plants to use for their growth.

Answer 2

the process by which nitrogen gas from the atmosphere converted into different compounds which is used by plants. is known as nitrogen fixation.
it can be done by three ways :
1. Lightning.
2. Industrial methods.
3. By bacteria living in soil.