Explain the concept of negative feedback within the carbon cycle. - AQA - A-Level Geography - Question 1 - 2022 - Paper 1
Question 1
Explain the concept of negative feedback within the carbon cycle.
Worked Solution & Example Answer:Explain the concept of negative feedback within the carbon cycle. - AQA - A-Level Geography - Question 1 - 2022 - Paper 1
Step 1
Feedback is an important aspect of systems and their tendency towards dynamic equilibrium
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Answer
In ecological systems, feedback mechanisms are crucial for maintaining balance. Negative feedback occurs when a change in a system triggers responses that counteract that change, promoting stability.
Step 2
Negative feedback nullifies / returns a system towards equilibrium
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Answer
This feedback process mitigates the effects of earlier alterations within the system, aiming to restore the system to its original state or balance.
Step 3
For example, increased atmospheric CO₂ leads to both warmer temperatures and availability of CO₂ for plants
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Answer
As CO₂ levels rise, it can result in higher temperatures. This scenario can enhance plant growth due to increased availability of CO₂, thus impacting the carbon cycle positively.
Step 4
This promotes increased photosynthesis and carbon capture/storage by plants
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Answer
The accelerated photosynthetic activity of plants can draw down CO₂ levels and further stabilize the climate, reducing carbon concentrations in the atmosphere back towards equilibrium.
