There is an effect of water cycle on the amount of water on earth, due to green house effect, the water evaporates from the earth and rise the temperature of the earth.
Water cycle is the circulation of water from the earth to atmosphere to back to the earth.
When the temperature rises, the water evaporates and goes into the atmosphere, where it condenses in the form of cloud and then rain on the earth.
Thus, the effect of water cycle on the amount of water on earth is due to green house effect, the water evaporates from the earth and rise the temperature of the earth.
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