Venus and Earth started out with roughly the same amount of water.While Earth still has water in abundance,all of Venus' was lost.Where did it go? A)It chemically combined with CO₂to form H₂CO₃. B)Ultraviolet rays split the hydrogen from the oxygen components,and the hydrogen escaped into space. C)It all evaporated into space due to the intense daytime heat of 470°C. D)Scientists are still trying to determine this.

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Quizplus · Accepted Answer

Venus does not have a strong magnetic field to protect its atmosphere from solar winds. Ultraviolet rays from the Sun have split the water molecules into their separate components of hydrogen and oxygen, and the lighter hydrogen atoms escaped into space because Venus does not have enough gravity to hold onto them. As a result, Venus lost all of its water over time.

Venus and Earth Started Out with Roughly the Same Amount