Food Chains & Food Webs

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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 a food web?

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A food web is a complex network of interconnected food chains that shows how different organisms are related through feeding relationships.

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Why is a food web called a 'web'?

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Because it looks like a spider's web, illustrating the interconnectedness of various food chains.

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What is a producer?

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An organism that makes its own food, typically through photosynthesis, such as plants.

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What is a primary producer?

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The producer on the first trophic level, which is essential for providing energy to the rest of the food chain.

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What is a consumer?

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An organism that cannot produce its own food and relies on consuming other organisms for energy.

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What is a primary consumer?

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An organism that eats primary producers; typically herbivores.

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What is a secondary consumer?

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An organism that eats primary consumers; these can be carnivores or omnivores.

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What is an apex predator?

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The organism at the top of the food chain, with no natural 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, defined by how an organism obtains its energy.