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Paper 1
2.1 The atmosphere
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2.2 The hydrosphere
2.3 Mineral resources
2.4 Biogeochemical cycles
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2.5 Soils
3 Energy resources
4 Pollution
7 Research methods
Paper 2
1.1 Conditions for life on Earth
1.2 Conservation of biodiversity
1.3 Life processes in the biosphere
5.1 Agriculture
5.2 Aquatic food resources
5.3 Forest resources
6 Sustainability
7 Research methods
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2019
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2022
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2023
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2024
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2025
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Paper 2
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2019
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2020
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2021
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2022
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2023
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2024
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2025
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AS
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2018
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2019
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2020
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2.4 Biogeochemical cycles.pdf
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2.4 Biogeochemical cycles.pdf