Question

THE ORIGIN OF WATER
Water is an essential part of our planet. Without
water, no life would be possible. We all
______________ about the water formula and
its cycle in nature. We have also seen how
much water there is in the oceans on maps,
but... do we know how water _______________
on our planet?
One of the most known theories says that water
______________ in our planet because
asteroids and comets have water in them in the
form of ice. In the Pre-Cambrian era, thousands
of meteorites the surface of Earth, causing great
destruction. The water stayed on our surface
and _____________ create life.
Another theory claims that water existed on Earth from the beginning.
Scientists have discovered some asteroids as old as our planet and
found evidence of water in them. According to some experts, water
could have appeared before we even
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Answer 1

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Answer 2

Water is an essential part of our planet. Without

water, no life would be possible. We all

learned about the water formula and

its cycle in nature. We have also seen how

much water there is in the oceans on maps,

but... do we know how water arrived

on our planet?

One of the most known theories says that water

appeared in our planet because

asteroids and comets have water in them in the

form of ice. In the Pre-Cambrian era, thousands

of meteorites the surface of Earth, causing great

destruction. The water stayed on our surface

and helped create life.

Another theory claims that water existed on Earth from the beginning.

Scientists have discovered some asteroids as old as our planet and

found evidence of water in them. According to some experts, water

could have appeared before we even thought.