Question

steps of carbon cycle

Answer 1

hi dear here is the answer

Carbon enters the atmosphere as carbon dioxide from respiration and combustion.

Carbon dioxide is absorbed by producers to make carbohydrates in photosynthesis.

Animals feed on the plant passing the carbon compounds along the food chain. Most of the carbon they consume is exhaled as carbon dioxide formed during respiration. The animals and plants eventually die.

The dead organisms are eaten by decomposers and the carbon in their bodies is returned to the atmosphere as carbon dioxide. In some conditions decomposition is blocked. The plant and animal material may then be available as fossil fuel in the future for combustion.



When animals and plants die, their nitrogen compounds are broken down by soil bacteria, fungi and other decomposers. In this way, nitrogen compounds are returned to the soil, where they may be absorbed by plants again


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Nitrogen gas is converted to nitrate compounds by nitrogen-fixing bacteria in soil or root nodules. Lightning also converts nitrogen gas to nitrate compounds. The Haber process converts nitrogen gas into ammonia for use in artificial fertilizers. Ammonia is converted to nitrates by nitrifying bacteria in the soil

Plants absorb nitrates from the soil and use these to build up proteins. The plant may be eaten by an animal, and its biomass used to produce animal protein

Urea and egested material is broken down by decomposers. This results in nitrogen being returned to the soil as ammonia

Decomposers also break down the bodies of dead organisms resulting in nitrogen being returned to the soil as ammonia

In some conditions denitrifying bacteria in the soil break down nitrates and return nitrogen to the air. This is usually in waterlogged soil. Improving drainage reduces this effect, making the soil more fertile.

Answer 2

Carbon enters the atmosphere as carbon dioxide from respiration and combustion.

Carbon dioxide is absorbed by producers to make carbohydrates in photosynthesis.

Animals feed on the plant passing the carbon compounds along the food chain. Most of the carbon they consume is exhaled as carbon dioxide formed during respiration. The animals and plants eventually die.

The dead organisms are eaten by decomposers and the carbon in their bodies is returned to the atmosphere as carbon dioxide. In some conditions decomposition is blocked. The plant and animal material may then be available as fossil fuel in the future for combustion.