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Why does nearly all life breathe oxygen?

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Summary
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83% Informative

Oxygen is easy to acquire and it doesn't require further processing of toxic compounds.

The reduction of oxygen provides the largest free energy release per electron transfer, except for fluorine and chlorine.

Aerobic respiration doesn't produce any toxic compounds, just water and carbon dioxide.

Despite its proclivity for forming compounds with other atoms, a copious amount of oxygen is constantly produced.

Harrison Tasoff is a science journalist with beats as varied as his interests.

He earned his B.A. in mathematics at Swarthmore College .

He is a graduate of NYU’s Science, Health , and Environmental Reporting Program .

He currently works at UC Santa Barbara and as a freelancer.

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