The water high up in the air forms clouds and falls as rain, coming back to the sea, rivers, lakes and the ground.Water changes its form as it travels around the Earth.Water evaporates from the sea, rivers and lakes, rising up into the air as water vapor.When rain falls to the ground, some of it ows away somewhere else or seeps into the soil.Water becomes ice when it cools down. It evaporates and turns into water vapor when heated up. The water that has seeped into the soil is invisible but very important.
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