After some googling plants will benefit from increased co2 levels until about 1000ppm and bad effects start at about 1500ppm so they would be safe even in the worst case climate change. Even humans can in theory survive as high as 5000ppm indefinitely at least in theory but at that point some CO2 poisoning effects would be felt. So basically a lot of other things would cause life to die before the co2 levels
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After some googling plants will benefit from increased co2 levels until about 1000ppm and bad effects start at about 1500ppm so they would be safe even in the worst case climate change. Even humans can in theory survive as high as 5000ppm indefinitely at least in theory but at that point some CO2 poisoning effects would be felt. So basically a lot of other things would cause life to die before the co2 levels
“Enough” new plants for what? The new plants are a result of increased carbon dioxide levels. Carbon dioxide is basically an atmospheric fertilizer.
What do you mean by “enough” here?