Scientifically, CO2 is used in photosynthetic processes. Therefore, with trees and bushes with green leaves, photosynthesis has taken place. This implies that the amount of CO2 released by humans, which may have effect on climate is substantially reduced.
Yes; the effect of our CO2 with regards to climate change is too small to be measured.
To cause climate change, our CO2 has to cause warming first.
But there is no empirical scientific evidence that our CO2 has caused warming anywhere in the atmosphere.
@Robert Holmes : but at least it adds to the global CO2 released from industries ???
Do you mean our CO2 (38Gt/year) adds to that released by nature (750Gt/year)?
Well with this question, you are pre-supposing that 'nature' sees a difference between our emissions and those of 'nature'.
Should we draw this distinction?
How could 'nature' see any difference between the two?
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