6. Water on our planet is believed by some studies to come from heavenly bodies. What can explain this phenomenon? A. Asteroids contain huge cap of ice in the surface as they hit the earth millions of years ago. B. Comets are cosmic snowballs of frozen gases that fall on earth. C. Meteors contain a lot of ice as O they hit the earth surface millions of years ago. D. Water could have been brought to O our planet by meteorites during the first two million years of
6. Water on our planet is believed by some studies to come from heavenly bodies. What can explain this phenomenon? A. Asteroids contain huge cap of ice in the surface as they hit the earth millions of years ago. B. Comets are cosmic snowballs of frozen gases that fall on earth. C. Meteors contain a lot of ice as O they hit the earth surface millions of years ago. D. Water could have been brought to O our planet by meteorites during the first two million years of
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