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What Are Phytoplankton?
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Why Do People Put Salt on Roads in Winter?
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What Are Marimo Moss Balls?
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Where Is Lake Baikal?
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What Is an X-ray Fish?
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Why Don’t We Drink Saltwater?
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How Does a Sawfish Use Its Saw?
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Do Animals Use GPS?
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Does Salt Water Freeze?
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Do Fish in Aquariums Swim in Freshwater or Saltwater?
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How Many Sharks Are In the Ocean?
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What Is a Polar Ice Cap?