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How did water become so abundant on our planet?
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How did water become so abundant on our planet?

User Jeeves
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There are many theories that when a meter came to earth that it brought water. Scientist say that there were many meteors that hit until there was finally the perfect liquid for living organisms to drink.This happened a very long time ago but scientists were able to find proof of meteors in our oceans, rivers, lakes etc. Luckily there is a system we humans use to clean water.
User Alex Lomia
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Answer:

It is implausible that Earth's water originated only from comets, since isotope measurements of the deuterium to hydrogen (D/H) ratio in comets Halley, Hyakutake, Hale–Bopp, 2002T7, and Tuttle, yield values approximately twice that of oceanic water.

Step-by-step explanation:

User Graeme Blackwood
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