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    Wetlands Inside Out
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    6.0   | 
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    Whale, Dolphin, and Other Pods
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    What are bulbs and roots?
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    3.2   | 
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    What are Camouflage and Mimicry?
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    5.5   | 
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    What are Earth's biomes?
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    4.3   | 
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    What are electrical circuits?
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    6.3   | 
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    What are flowers?
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    3.1   | 
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    What are Food Chains and Webs?
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    5.8   | 
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    What are insulators and conductors?
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    6.3   | 
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    What are leaves?
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    3.1   | 
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    What Are Light Waves?
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    3.2   | 
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    What are natural structures?
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    What are nature's copycats?
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    4.9   | 
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    What Are Newton's Laws of Motion?
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    6.9   | 
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    What are opposites in nature?
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    What are seeds?
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    3.0   | 
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    What Are Shadows and Reflections?
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    3.7   | 
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    What Are Sound Waves?
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    3.6   | 
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    What are stems?
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    3.0   | 
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    What are these animals doing?
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    What Are Waves?
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    What are Wetlands?
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    6.4   | 
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    What color is it?
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    What comes next?
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