SCIENCE
EARTH SCIENCE
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 Question 
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 Evidence shows that there are two potential ways that water got here on earth. Those two ways are: 
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  Asteroids and it formed during the accretion of our planet in the mantle. 
 
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  Volcanic eruptions on Mars and asteroids 
 
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  Comets and asteroids 
 
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  it formed during accretion of our planet in the mantle and the water cycle brought it here 
 
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 Explanation: 
Detailed explanation-1: -The water we encounter today, it seems, must have been delivered long after Earth formed. Faced with this conundrum, astronomers realized that there are two ready-made sources: comets and asteroids, the solar system’s gravel strewn among planetary boulders.
Detailed explanation-2: -Multiple geochemical studies have concluded that asteroids are most likely the primary source of Earth’s water. Carbonaceous chondrites–which are a subclass of the oldest meteorites in the Solar System–have isotopic levels most similar to ocean water.
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