[MorTech]

400 PPM atmospheric CO2 is barely enough to sustain biolife on Earth. We use to run our greenhouses at about 5000 PPM by oxidizing propane. The leaf material had a funky texture to it because there were fewer pores in the dense cellulose structures. The plants did not need as much water in a high CO2 environment. The Earth atmosphere contained about 8000 PPM CO2 and temperature about 85F back in the Mesozoic/Jurassic Era because dinosaurs were driving SUVs and gas golf carts. If the Earth ever returns to it's optimal temperature of 69F (We are at about 60F now...Still coming out of a long Ice Age), we will see some pretty nasty and large plants evolve and perhaps return of dinosaurs over time (They taste like chicken I hear). Atmospheric CO2 will be about 1500 PPM at 69F.