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Which Planet in our solar system has the highest percentage of oxygen?

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Which Planet in our solar system has the highest percentage of oxygen?
posted Feb 13, 2017 by Dhaval Vaghela

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1 Answer

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Earth has 21% of Oxygen in Atmosphere.

There is only one planet where gaseous oxygen is found: Earth! And the only reason that Earth has oxygen is because Earth has plants that do photosynthesis. There is no other natural process that we know of that will put significant amounts of oxygen into a planet's atmosphere.

answer Apr 29, 2017 by Alivia Clark
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