And then the unit of measurement for emissions is in gigatons, 1 billion tons, which uses the 1,000 kg tons as a reference... So that would be 2.818 gigatons of emissions produced by humans themselves.

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With such a comparison you can begin to imagine how the 37 gigatons of CO2 produced from fossil fuel emissions in 2017 could have a significant impact on our earth.

To produce enough oxygen for a human, you would need around 10,000 leaves which should be around 300 to 500 plants.

With the added strain from fossil fuel emissions, it becomes pretty much impossible for the plants to keep up.