Food Webs and Food Chains

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What is an ecosystem?

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An ecosystem is a community of living and nonliving things in an environment, together with their interactions.

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What does it mean if an organism is endangered?

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An endangered organism is any species that is in immediate danger of becoming extinct.

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What is a food web?

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A food web is a complex network of feeding relationships among various organisms in an ecosystem.

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What is a food chain?

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A food chain is a linear sequence that shows how energy and nutrients flow from one organism to another in an ecosystem.

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What is mutualism?

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Mutualism is a type of symbiotic relationship where both organisms benefit from the interaction.

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What is commensalism?

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Commensalism is a type of symbiotic relationship where one organism benefits and the other is neither helped nor harmed.

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What is parasitism?

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Parasitism is a type of symbiotic relationship where one organism benefits at the expense of the other.

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What is a predator?

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A predator is an organism that hunts and eats other organisms for food.

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What is prey?

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Prey is an organism that is hunted and eaten by predators.

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What is a trophic level?

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A trophic level is a position in a food chain or food web that indicates the flow of energy and nutrients.