The Science Behind Volleyball
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2.6 |
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The Science Behind Water Sports
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2.9 |
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Acadia National Park
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2.8 |
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Everglades National Park
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2.6 |
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Grand Canyon National Park
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2.9 |
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Great Smoky Mountains National Park
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2.9 |
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Yellowstone National Park
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2.9 |
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Yosemite National Park
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2.7 |
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Guatemala
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2.7 |
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Ireland
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2.9 |
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Kenya
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2.7 |
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Philippines
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2.8 |
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Sweden
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2.9 |
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Saving the American Alligator
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2.9 |
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Saving the American Bison
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2.8 |
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Saving the Bald Eagle
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2.9 |
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Australia
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2.8 |
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Saving the Gray Whale
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2.9 |
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Dominican Republic
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2.9 |
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Ecuador
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2.9 |
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El Salvador
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2.7 |
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England
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2.9 |
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France
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2.9 |
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Germany
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2.9 |
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