Answer the following questions in about 150 words.
(i) What are bio-geochemical cycles? Explain how nitrogen is fixed in the
atmosphere.
Answers
Answer:
In ecology and Earths science, a biogeochemical cycle or substance turnover a cycling of substance in a pathway by which a chemical substance moves through biotic and abiotic compartments of earth.
Answer:
The elements or nutrients of earth were always in circular fashion which circular fashion called as bio-geo chemical cycle.
Explanation:
Bio geo chemical cycles classified in to Nutrient cycling and gaseous cylcing. Sulphur and phosphorous cycles are nutrient cycle. Water, Nitrogen and Carbon are gaseous cycle.
Nitrogen is abundant in nature but it cant directly taken by most of the living organism so it can be converted in to ammonia, nitrite and nitrate. Some bacteria were used for this conversion of nitrogen substances such as Aztobacter, Nitrosomonas, Pseudomonas and so on.
More about bio geo chemical cycle:
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More about nitrogen cycle:
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