Food chain | Definition, Types, & Facts | Britannica
网页food 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.
Food web | Definition, Ecosystem, Food Chain, & Examples
网页2024年8月28日 · food web, a complex network of interconnecting and overlapping food chains showing feeding relationships within a community. 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 Chain - National Geographic Society
网页2023年10月19日 · 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. For example, grass produces its own food from sunlight.
Food chain Definition and Examples - Biology Online Dictionary
网页2023年6月15日 · 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.
Food chain - Wikipedia
网页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). It is not the same as a food web.
Food Chain – Definition, Parts, Types, and Examples - Science Facts
网页2023年2月17日 · 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.
Food Chains and Webs - National Geographic Society
网页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.
9.3: Food Chains and Food Webs - Biology LibreTexts
网页2023年10月31日 · A food chain is a linear sequence of organisms through which nutrients and energy pass as one organism eats another; the levels in the food chain are producers, primary consumers, higher-level consumers, and finally decomposers.
18.20: Food Chains and Food Webs - Biology LibreTexts
网页2022年7月31日 · In ecology, a food chain is a linear sequence of organisms through which nutrients and energy pass: primary producers, primary consumers, and higher-level consumers are used to describe ecosystem structure and dynamics. There is a single path through the chain.
6.4: Food Chains and Food Webs - Biology LibreTexts
网页What is a food chain? Describe the role of decomposers in food webs. Why is a food web more realistic than a food chain? Draw a terrestrial food chain that includes four feeding levels.
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