The cause of the water circulation
1. Heat from the sun caused the evaporation of water from the water resources. A steam into the atmosphere, 2
. The wind keeps the water evaporation faster
3.Humans and animals excrete waste in the form of sweat, urine and breath becomes ไอน้ำสู่
4 atmosphere.Plant root tree is like a sponge. The ability to absorb water from the soil to keep many parts of both elite branch, leaf, flower and stem, then spit the water into the atmosphere. Steam condenses and the combination of these clouds and rain is rain next
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