Air quality and climate — Normal
Apply the topic independently and explain your method. No hints during the test.
Includes extension practice
Air/climate chemistry is covered under official C10.2; this practice also includes cross-topic photosynthesis quantities.
Easy, Normal and Difficult describe practice demand; they are not the official Core and Extended tiers.
- igcse-cambridge-cie-0654 2028–2029 · C10.2; biology photosynthesis outcomes
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