When Garima came to know about 22 $n d$ March, she became curious and started to research on the origin of water on the Earth. Which of the following is a probable hypothesis?

Local origin of water on earth

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The Earth was a ball of water from the beginning

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Extra terrestrial origin of water on earth

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None of the above

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Solution

The correct option is C
Extra terrestrial origin of water on earth

Both comets and asteroids can contain ice. And if by colliding with Earth, they added the amount of material, as some scientists suspect, such bodies could easily have delivered oceans' worth of water. Accordingly, each has been fingered as a suspect in the mystery. Some other scientists believe that carbonaceous meteoroids called chondrites hit the Earth and led to the origin of water.

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When Garima came to know about 22nd March, she became curious and started to research on the origin of water on the Earth. Which of the following is a probable hypothesis?

When Garima came to know about 22 $n d$ March, she became curious and started to research on the origin of water on the Earth. Which of the following is a probable hypothesis?