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What is the ratio of photosynthetic plants to the amount of oxygen produced?
Question Date: 2018-10-09
Answer 1:

This question isn't defined; the Earth's atmosphere is 20% oxygen. The mass of the Earth's atmosphere is about 5 x 1018 kg, which means 1018 kg of oxygen. The total biomass of the Earth is thought to be about 5 x 1014 kg, most of which is plants. This would mean that for every kilogram of plant matter, there are about 5,000 kilograms of atmospheric oxygen.

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