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Title: The large amount of free oxygen in the Earth's present atmosphere is primarily a result ... Post by: symbo on Mar 17, 2017 The large amount of free oxygen in the Earth's present atmosphere is primarily a result of
A) out-gassing by volcanoes and other geological processes. B) biological processes such as photosynthesis. C) splitting of carbon dioxide into carbon and oxygen by solar ultraviolet light. D) carbon dioxide becoming dissolved in the oceans, releasing oxygen. Title: Re: The large amount of free oxygen in the Earth's present atmosphere is primarily a result ... Post by: hyponotica on Mar 17, 2017 Content hidden
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