Although disagreement exists about the extent to which hydroelectric power could help to mitigate global warming, there is no doubt that water and ice will play a central role in climate change. Many of the most serious fears about climate change—rising sea levels, increased storm activity, droughts—involve the effects of global warming on water and ice. Similarly, the many hopes for mitigating global warming—through hydroelectric power, or through the cultivation of wetlands—involve the planet's water. In short, climate and water on the earth are so closely connected that it is impossible to alter one without affecting the other.
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