sopappy
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(watched an interesting climate change video)
It's been as high as 2000, low as 250. The stomata on the leaves vary directly in number according to the availability of CO2. In fact, they can calculate the CO2 levels at that time by counting stomata on plant fossils from that time. If the plant has muchos CO2 available, it has less stomata, if levels are low, it has more.
What's the point in trying to augment with CO2 ?
I think they die at 150 ppm (likely COVERED in gaping stomata! da horror!)
It's been as high as 2000, low as 250. The stomata on the leaves vary directly in number according to the availability of CO2. In fact, they can calculate the CO2 levels at that time by counting stomata on plant fossils from that time. If the plant has muchos CO2 available, it has less stomata, if levels are low, it has more.
What's the point in trying to augment with CO2 ?
I think they die at 150 ppm (likely COVERED in gaping stomata! da horror!)
