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> If anything everything grows better in a higher CO2 environment

No. Life adapts to the atmospheric levels of CO2; changes in atmospheric composition are qualitative and lead to differences in fundamental chemical processes.

> let alone a warmer one.

No, it depends on the plant. Plants evaporate water to control internal temperature, and changes in climate will alter no just the exterior temperature but levels of soil moisture, which changes the types of flora that can inhabit an area substantially.

Extreme weather events happen all the time, but their increase in probability means that there is now a much greater variance in global food output. And considering that food production is extremely controller versus the natural mechanisms organisms generally have available, it leads to the acceleration of the current mass extinction event we're living in.



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