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Posts tagged h2o

March 28, 2012

 

child underwater holding breath

How Much Breathable Oxygen Gas Is There In The Atmosphere?

I have a friend who says there's not much oxygen on earth. Ever since I heard that I can't catch my breath! What's the truth?

December 8, 2011

 

chemicals

Are You Chemically Dependent?

We humans are dependent on chemicals like water, air, sugars, starches, fats, proteins, as well as on small amounts of vitamins and minerals.

May 3, 2005

 

Water on the Sun

Is there water on the sun? Learn more on this Moment of Science.

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