Question

Write a short note on carbon cycle in 100 words

Answer 1

Various materials including different nutrients and metals move in the ecosystem in a cyclic manner. The major reserves or storage compartment of the materials are known as reservoirs. When the major reservoir of a nutrient is in the atmosphere, it is known as a gaseous cycle, e.g., nitrogen cycle, which has its reservoir in the form of nitrogen gas (N2) constituting about 78% of the atmosphere.

When the reservoir is in the earth’s crust or sediments, it is known as a sedimentary cycle e.g., phosphorus cycle-which has its reserve as phosphate rocks. Sulphur cycle is an example of an intermediate type, which has reservoir both in soil and the atmosphere

Movement of the materials from one reservoir to another may be driven by physical agents like wind or gravitational energy. It may also be due to chemical energy, e.g., when the water body reaches saturation-the reservoir is chemically full and therefore, no longer can hold it as such.

Then the material usually is precipitated out. The average time for which a material (molecule of a substance) remains in a reservoir is known as its residence time.

Answer 2

Answer:

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Explanation:

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