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A food chain is a linear sequence of organisms through which nutrients and energy pass as one organism eats another. In a food chain, each organism occupies a different trophic level, defined by how many energy transfers separate it from the basic input of the chain.
Food Chains and Webs. A food chain outlines who eats whom. A food web is all of the food chains in an ecosystem. Each organism in an ecosystem occupies a specific trophic level or position in the food chain or web. Producers, who make their own food using photosynthesis or chemosynthesis, make up the bottom of the trophic pyramid.
Oct 31, 2023 · Definition: Trophic Level. Food Chains. Trophic Level Transfer Efficiency. Food Webs. Top Down vs Bottom Up Control. Does an ecosystem have to choose to be either top-down or bottom-up? Consequences of Food Webs: Biological Magnification. Definition: Biomagnification. Attributions. Trophic Interactions.
Jun 15, 2023 · A food chain is a group of organisms that are consumed in a linear order, passing nutrients and energy along the way. Each organism in a food chain is at a particular trophic level, which is determined by how many energy transfers distance it from the chain’s primary energy source.
A food chain is a linear network of links in a food web, often starting with an autotroph (such as grass or algae ), also called a producer, and typically ending at an apex predator (such as grizzly bears or killer whales ), detritivore (such as earthworms and woodlice), or decomposer (such as fungi or bacteria ).
Apr 5, 2024 · A food chain shows how matter and energy from food are transferred from one organism to another, whereas a food web illustrates how food chains intertwine in an ecosystem. Food webs also demonstrate that most organisms consume or are consumed by more than one species, which food chains often do not show. Structure. pest.
What is a food chain? Part of The World Around Us Animals. Save to My Bitesize. Remove from My Bitesize. Learn about food chains. This food chain shows a leaf is eaten by a worm, which is...
