[pas]

“We are actually at historically low levels of CO2.” The chart right below does not support that. It shows it is near the top of a cycle that has repeated many times.

[Lonesome in Massachussets]

It shows it is near the top of a cycle that has repeated many times.

Going back a few thousand years, true, a few million, no. Evolutionary adaptation lags the environment by several million years, at least. Plants today are adapted to much higher carbon dioxide levels. It is well known that greenhouses add CO2 to increase yields.