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  • Stage 1

    Answer 4 questions correctly in a row.

Food chains are models that show how organisms in an ecosystem can get their food. You can use a food chain to predict how populations of organisms will affect one another.
This food chain shows organisms in a forest ecosystem.
silver maple
beaver
black bear
Use the food chain to complete the text below.
If the population of black bears increases, beavers will have
predators. If this happens, beavers will be
likely to survive and produce offspring.
ref_doc_title.

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