What are carbohydrates?
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How do plastic make?
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What is the Carbon Cycle?
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What is Organic Chemistry?
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What is oil?
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What Are Aromatic Carbohydrates?
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What is a carbon chain?
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What is oil?
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What is cellulose?
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What is DNA?
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How is oil cleaning?
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What is a polymer?
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Who Discovered DNA?
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What is spherical Carbon?
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Who invented the water wheel?
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Why icebergs swim in the sea?
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What is the power of a hydroelectric power plant?
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Why do plants need water?
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Why does the sweat cool the body?
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How much water is in the body?
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What is heavy water?
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What is a hydraulic drive?
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What are the features of water?
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What is a half-cut?
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Who Invented the Atomic Bomb?
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