Chemistry (Combined Science) · GCSE · Edexcel · Edexcel GCSE Combined Science (1SC0) — Chemistry — Higher · Specification point · 8.22 · Fuels and Earth science · Earth and atmospheric science
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| Students should: | Maths skills |
|---|---|
8.22 Explain how the growth of primitive plants used carbon dioxide and released oxygen by photosynthesis and consequently the amount of oxygen in the atmosphere gradually increased |