Thuy Quynh TF5cn_2sd June

THE WATER
It should be obvious that the water which already occupy approximately tow of three of the Earth, is how dispensable to humanâ?Ts living. But we also wander that how do the water operate?
The Earthâ?Ts water is always in movement, and the water cycle which has not starting and ending poit. The sun, which drives the water cycle, heat water in the oceans, rivers and streams. Some of it evaporates as vapor into the air. Ice and snow can sublimate into water vapor. The vapor rises into the air where cooler temperrature cause it condense into clouds. After a long time, the clouds come together into precipitation. Most precipitation falls back into the oceans, onto land and river where from the water towards the oceans. Then water in the oceans, when the sun heat, is evaporated into vapor. It is the water cycle.
In short, the water always change states among liquid, vapor and ice at various place in the water cycle. The balance of water on Earth is constant over time but the humanâ?Ts use of water is not dayly adaptable to result from pollution of water.

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