Biology unit 4 flash cards 0.0 / 5 ? BiologyEcology, ecosystems and environmental biologyA2/A-levelAQA Created by: Loz18Created on: 04-12-15 14:50 Trophic level Each stage of a food chain 1 of 5 Autotroph An organism capable of synthesising its own food 2 of 5 Gross productivity The total energy or nutrients assimilated by an organism 3 of 5 Heterograph An organism that cannot manufacture its own food so obtains energy from organic substances 4 of 5 Detrivores Things that feed on date or decaying mate 5 of 5
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