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Re: "Lungs Of The World" Collapsing As Brazil Declares "State of Emergency"
There is one thing I do not understand, about the comment that the Amazon is the lungs of the earth. Plants have always produced more oxygen then the animals use up allowing net oxygen to accumulat in the atmoshere. Why is the oxygen level of the atmosphere sort of stuck at 20% percent or so and not always on the rise. Humans has been burning things for maybe 10,000 years but only on a large scale for maybe 100 years, yet plants have been around for billions and the oxygen does not keep rising. If one looks at Venus it is able to hold way more pressure in its atmosphere even though it is smaller and much hotter.
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