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        9-12

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        Part of Nature
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        Claw Size and Competition: Behaviors of Male Fiddler Crabs

        Learn about competitive behaviors in fiddler crabs, and see how claw size seems to shape where crabs choose to burrow and who to call a friend or foe in this resource from the series NATURE.

        Additional support materials are available, including discussion questions, vocabulary, and activities to help expand students’ knowledge of animal behavior and natural selection.

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