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Food chains and trophic levels

Food chains and trophic levels is part of IB Environmental Systems and Societies Topic 2.2. Below you'll find links to free study notes, flashcards, and practice questions.

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More in Topic 2.2

2.2.1Energy and matter in ecosystems2.2.2The first law of thermodynamics2.2.3Photosynthesis and respiration transform energy and matter2.2.4Photosynthesis: from light to biomass2.2.5Producers: the first trophic level2.2.6Cellular respiration: releasing energy2.2.7Respiration and heat2.2.8The second law of thermodynamics2.2.9Consumers and their feeding strategies2.2.10Producers and consumers in food chains