This unit builds on unit 7D 'Variation and classification' and unit 7C 'Environment and feeding relationships'.
It relates to unit 7I 'Energy resources', unit 8A 'Food and digestion', unit 8B 'Respiration', unit 8D 'Ecological relationships', unit 8F 'Compounds and mixtures', unit 9G 'Environmental chemistry' and unit 9H 'Using chemistry'.
It provides the foundation for unit 9D 'Plants for food' and for work in key stage 4 on limiting factors in photosynthesis, energy transfer through an ecosystem and the mineral requirements of plants.
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