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14-05-2019
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when did oxygen levels start to decline from 35 percent down to today’s levels

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2inthechat 2inthechat

14-05-2019

Answer:

100 percent

Explanation:

the oxgyn level todays level is 95

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luvofmine luvofmine

14-05-2019

The oxygen levels started to decline from 35 percent down to today’s levels in 1995.

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