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- There is the same amount of water on Earth
as there was when the Earth was formed. The water from your
faucet could contain molecules that dinosaurs drank.
- Water is composed of two elements: hydrogen
and oxygen. Two hydrogen plus one oxygen = H2O.
- Water regulates the Earth's temperature.
It also regulates the temperature of the human body, carries
nutrients and oxygen to cells, cushions joints, protects organs
and tissues, and removes wastes.
- The human brain is 75% water; a living
tree is also 75% water.
- Although the average person can live for
about one month without food, we can only survive about a week
without water.
- What we do to the environment affects
the quality of our drinking water. What we pour on the ground
will end up in our water; what we spray into the air will also
end up in our water.
- The average total home water use for each
person in the U.S. is about 50 gallons per day.
- Water expands by 9% when it freezes. Frozen
water (ice) is lighter than water, which is why ice floats in
water.
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