trophic level

Discovery Science: Ecosystems – Energy flow and food Chains

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Earth Science: Ecosystems – Energy flow and food Chains Food chains, or food networks, describe the feeding relationships between species within a certain ecosystem. The system illustrates the intricate interactions between organisms in terms of consumption and production. The organisms of an ecosystem that are linked to each other by production and consumption of biomass … Read more

Pocket Genius Science: The living world – Food webs

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Facts At Your Fingertips: The living world – Food webs Energy passes from one living thing to another in the form of food. Food webs show how living things feed on one another. At the bottom of a food web are plants, which make their own food using energy from the Sun. At the top … Read more