water: a special substance
TRANSCRIPT
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Water: a special substance
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IceWater
Steam
Water is the only substance that occursWater is the only substance that occurson the earth in all 3 states.on the earth in all 3 states.
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H, He and O are the 3 most H, He and O are the 3 most common elements in the universe.common elements in the universe.
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The earth‘s surface is The earth‘s surface is covered 70-75% with covered 70-75% with water.water.
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The human body is made up of The human body is made up of about 75% water.about 75% water.
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In the course of 100 years a single water molecule spends about 98 years in the sea.
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18 months as ice
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2 weeks in rivers or lakes
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Less than a week in the atmosphere