Freshwater accounts for only about 3% of Earth’s total water supply, but the supply is not evenly distributed among the world’s countries. Climate zones influence the amount of freshwater, so drier climates, like deserts, have less available water. Towns and cities in deserts or semiarid climates might have trouble providing enough water for everyone. Towns in wet climates, like rainforests, have plenty of water for everyone. Not all countries have enough water for all of their people.
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