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It's also so trivially easy to refute. If CO2 was a significant stimulant for plant growth, they'd be sucking it out of the air as fast as we were putting it ou
by ocschwar 8y ago
It's also so trivially easy to refute. If CO2 was a significant stimulant for plant growth, they'd be sucking it out of the air as fast as we were putting it out, and the whole issue would be moot.
- VBprogrammer 8y agoI'm not sure that's a good argument. It's entirely plausible that plants need CO2 to exist at a particular partial pressure to absorb it. In the same way people wouldn't drag the O2 level in a sealed room down to 0%.
- LinuxBender 8y agoHumans can't bring the level near 0% because they would die long before that. Humans need between 19% and 24% O2. Below 19%, humans can't exert much energy without passing out. Above 24% increases damage from free radicals.