Food Chain - National Geographic Society
WebOct 19, 2023 · Article. Vocabulary. The food chain describes who eats whom in the wild. Every living thing—from one-celled algae to giant blue whales ( Balaenoptera musculus )—needs food to survive. Each food chain is a possible pathway that energy and nutrients can follow through the ecosystem.
Food chain | Definition, Types, & Facts | Britannica
WebFood chain, in ecology, the sequence of transfers of matter and energy in the form of food from organism to organism. Food chains intertwine locally into a food web because most organisms consume more than one type of animal or plant. Learn more about food chains in this article.
Food chain - Wikipedia
WebA 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 ).
Food chains & food webs (article) | Ecology | Khan Academy
WebA 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 …
Food web | Definition, Ecosystem, Food Chain, & Examples
WebApr 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.
Food chain Definition and Examples - Biology Online Dictionary
WebJun 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.
9.3: Food Chains and Food Webs - Biology LibreTexts
WebOct 31, 2023 · 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. Trophic interactions occur when one organism feeds …
Food Chains and Webs - National Geographic Society
WebA 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.
What is a food chain? - BBC Bitesize
WebWhat 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 then...
Food Chain – Definition, Parts, Types, and Examples - Science Facts
WebFeb 17, 2023 · A food chain refers to a linear sequence of organisms showing how energy or nutrient flows through an ecosystem when one organism consumes another for its survival. It provides information about which species eats which other species in nature.
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