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21 February, 13:46

Where did earth's water come from?

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  1. 21 February, 14:39
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    No one really knows but comets and asteroids can contain ice, and if they collide with earth the ice melts, giving us water.
  2. 21 February, 16:44
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    Both comets and asteroids can contain ice. And if, by colliding with Earth, they added the amount of material some scientists suspect, such bodies could easily have delivered oceans' worth of water.
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