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My Answered Questions
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what will happen to the sun after billions of years
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when will be the next supermoon
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why do our teeth fall
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what was the first planet in Earth???
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when your old why does your hair change colour
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How many types of blood are there
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how can you get rid of birthmarks instead of doing surgery
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when was the first rocket built
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how do birthmarks appear
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how do chicken pox form