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Air is not given. It is produced. The oxygen we breathe is the result of planetary systems shaped over billions of years. Oceans, forests and microscopic organisms continuously generate the atmosphere around us. The question is not where oxygen comes from. The question is how stable that system really is.
By Alex WhiteAir is not given. It is produced. The oxygen we breathe is the result of planetary systems shaped over billions of years. Oceans, forests and microscopic organisms continuously generate the atmosphere around us. The question is not where oxygen comes from. The question is how stable that system really is.