Edexcel IGCSE Biology · Spec 4.10
The Carbon Cycle
How carbon moves through the environment via photosynthesis, respiration, decay and combustion.
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The Carbon Cycle
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Spec 4.10
What you need to know
- Describe how carbon moves through the cycle
- Name the key processes
- Explain how humans raise CO2 levels
Active recall
Quick check
Answer each question before opening the answer.
Which processes add carbon dioxide to the atmosphere?
Respiration, combustion (burning) and decomposition.
Which process removes carbon dioxide from the atmosphere?
Photosynthesis.
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