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How can we increase the total percentage of oxygen in air around us?

April 26, 2017air Biology increase oxygen PERCENTAGE total

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How can we increase the total percentage of oxygen in air around us?

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Well, plants increase the level of oxygen in an environment. Question is: why would you want to? We’ve evolved to deal with oxygen at the level it is. Higher levels of oxygen are actually dangerous to us and we suffer from oxygen toxicity.