Most people think not, but we are faced with the problem of water scarcity water really? already expires? Ever know what the water did not go away, it is because the water cycle itself with turnover. The water cycle, is that the water in the water source such as a river, the sea and the ocean, etc., when the terrain gets heat from the Sun. Water vapour in the atmosphere when it gets cold. Occurs, the condensation clouds Water in the air caused the snow and rain are collected into the surface to Earth. OK, most of the ocean space. Moreover, the agreement comes in the form of rain and snow, and some, it penetrates the ground and flows into the water source.
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