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All of the earth's water is part
of a "Closed
System". This means there is exactly the same amount of water today as there was when
the earth was first formed. The next time you have a drink of cold, clear, refreshing
water, just remember: you're drinking something approximately 5 billion years old!
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Earth should be called the "water
Planet". Why? 75% of the surface of the earth is covered in water!
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Approximately
97% of all the earth's water is salt water!
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Of the 3% or so of the earth's water which is
fresh water, business and agriculture use about 77% of it!
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The human body is
approximately 75% water!
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Humans require about two quarts of water per
day!
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Nearly 1/2 of the world population lacks
access to lean water for sanitation, drinking and other basic human needs!
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The moisture in the air at anytime carries
about a 10 day supply of water!
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About 40% of all the water used by municipalities is used
for irrigation purposes!
