H2o | A Moment of Science - Indiana Public Media

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?

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

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

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