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Case #1 If the Earth's tempurature was to raise just a little bit, then the water on Earth would begin to evaporate. If the water on earth evaporated, then it would form more clouds. If there were more clouds and they were blocking the sun, they would reflect the beams back. Since the sun's rays give us heat, then the Earth would eventually get colder and colder until icebergs started to form and this would be the start of a new ice age like era. In the picture, this would include the precipretation step not taking place and the water just staying in the clouds.

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