-- Comment from the YouTube video below. When they allow comments, be sure to read some of them.
Seems CO2 is no problem AU record coal exports!
Plants require CO2 for photosynthesis, and when the concentration of this gas in the atmosphere decreases, their growth and health are negatively affected. At CO2 concentrations lower than 120 or 130 ppm, plants begin to die.
Be sure to check out geoengineeringwatch.org
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