Question

explain nitrogen cycle with a neat flow chart​

Answer 1

Explanation:

The nitrogen cycle is the biogeochemical cycle by which nitrogen is converted into multiple chemical forms as it circulates among atmosphere, terrestrial, and marine ecosystems. The conversion of nitrogen can be carried out through both biological and physical processes. Important processes in the nitrogen cycle include fixation, ammonification, nitrification, and denitrification. The majority of Earth's atmosphere (78%) is atmosphere nitrogen, making it the largest source of nitrogen. However, atmospheric nitrogen has limited availability for biological use, leading to a scarcity of usable nitrogen in many types of ecosystems.

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Answer 2

[tex]Nitrogen fixation :

The phenomenon by which nitrogen is converted into nitrates and nitrites and get fixed in the soil or directly due to some bacterial action is known as nitrogen fixation there are two way of nitrogen fixation.

1.Biological fixation:

Symbiotic bacteria (Rhizobium) living in the root nodules of leguminous plants like peas, grams, beans, etc., absorb nitrogen directly from the air and convert it into nitrates. Thereafter, the plants convert them into proteins.Some non-leguminous plants like ginkgocan also fix nitrogen.

2.Non-biological fixation :

During lightning, temperatures often reach as high as 3000°C. At such temperatures, nitrogen and oxygen present in the air combined to form oxides of Nitrogen.