Outline the process of decomposition in the carbon cycle.
- AQA - A-Level Geography - Question 1 - 2020 - Paper 1
Question 1
Outline the process of decomposition in the carbon cycle.
Worked Solution & Example Answer:Outline the process of decomposition in the carbon cycle.
- AQA - A-Level Geography - Question 1 - 2020 - Paper 1
Step 1
Decomposition refers to the breakdown of organic matter
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Answer
Decomposition is the process by which organic matter, such as dead plants and animals, is broken down into simpler substances. This process is mainly facilitated by microorganisms such as bacteria and fungi, which play a crucial role in recycling nutrients back into the soil.
Step 2
Role of decomposers
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Answer
Animals like worms, along with bacteria and fungi, are collectively known as decomposers. These organisms consume and break down the organic matter, which leads to the release of carbon dioxide into the atmosphere.
Step 3
Release of carbon dioxide
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During decomposition, carbon dioxide (CO2) is released into the atmosphere as a byproduct of the metabolic processes of the decomposers. This carbon dioxide is an important component of the carbon cycle.
Step 4
Temperature dependence of decomposition
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Decomposition is significantly influenced by temperature. Warmer temperatures tend to accelerate the rate of decomposition, as higher temperatures increase microbial activity. Additionally, moisture plays a key role, as water is necessary for microbial life and influences decomposition rates.
