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How viruses spread
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The science behind allergies
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How animals help medical research
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Why humans and chimpanzees are so similar
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The process of photosynthesis
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How muscles work
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Why fingerprints are unique
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The function of red blood cells
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How our eyes perceive color
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Why we need sleep
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The role of the immune system
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The structure of the human heart
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How the brain stores memories
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