Food Webs + Energy Pyramids

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What is a producer in an ecosystem?

Back

A producer is an organism that can make its own food through photosynthesis or chemosynthesis, such as plants and algae.

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What happens to the food web if a primary consumer is removed?

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If a primary consumer is removed, the number of plants may increase because there are fewer organisms eating them.

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NGSS.MS-LS2-1

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What does a food pyramid represent?

Back

A food pyramid represents the relative amount of energy available at each trophic level in an ecosystem.

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NGSS.MS-LS2-3

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What is a primary consumer?

Back

A primary consumer is an organism that eats producers; examples include herbivores like snails and rabbits.

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NGSS.MS-LS2-2

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What is the first source of energy in a food pyramid?

Back

The first source of energy in a food pyramid is typically producers like algae, plankton, and seagrass.

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What is a trophic level?

Back

A trophic level is a position in a food chain or food web, defined by how many steps it is from the primary producers.

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NGSS.MS-LS2-2

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What role do decomposers play in an ecosystem?

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Decomposers break down dead organisms and waste, returning nutrients to the soil and helping to recycle matter.

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NGSS.MS-LS2-3

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What is a secondary consumer?

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A secondary consumer is an organism that eats primary consumers; examples include small carnivores like frogs.

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NGSS.MS-LS2-3

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What is an energy pyramid?

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An energy pyramid is a graphical representation showing the flow of energy at different trophic levels in an ecosystem.

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NGSS.MS-LS1-6

NGSS.MS-LS2-3

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What is the difference between a food chain and a food web?

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A food chain is a linear sequence of organisms where each is eaten by the next, while a food web is a complex network of interconnected food chains.

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NGSS.MS-LS2-2