The lowest level of CO2 known in the past 500,000,000 years (since "life as we know it" began, was 18,000 years ago. At that time, nearly ALL plant life went extinct. There is a level (around 150 pbb, IIRC) that would make all plant life go extinct, and if all the plants die, then so do all the animals.
For some unkown reason, CO2 levels started to rise, and have been rising since. But we are still at VERY low levels, historically. There was 2,000 times more CO2 in the atmostphere 500,000,000 years ago, when life was exploding into new forms.
The oceans store and release CO2, as the Earth's atmosphere needs. It is not know how this works, but it does. Since the industrial revolution (just 200 years or less), CO2 levels have been rising (from dangerously low levels), and that is likely man-made in part. But it is a GOOD thing, not a bad thing.
We do NOT want less CO2.
The lowest level of CO2 known in the past 500,000,000 years (since "life as we know it" began, was 18,000 years ago. At that time, nearly ALL plant life went extinct. There is a level (around 150 pbb, IIRC) that would make all plant life go extinct, and if all the plants die, then so do all the animals.
For some unkown reason, CO2 levels started to rise, and have been rising since. But we are still at VERY low levels, historically. There was 2,000 times more CO2 in the atmostphere 500,000,000 years ago, when life was exploding into new forms.
The oceans store and release CO2, as the Earth's atmosphere needs. It is not know how this works, but it does. Since the industrial revolution (just 200 years or less), CO2 levels have been rising (from dangerously low levels), and that is likely man-made in part. But it is a GOOD thing, not a bad thing.