What high CO2 does to our world

We'll find out in time what increasingly higher levels of CO2 do to our world. 

Well, actually, it won't be possible to know what changes can be attributed to CO2 alone and what to other things, because everything is constantly in a state of flux.

So there'll always be question marks, over what causes what, until we have reached some kind of balance, where we've done all we can do to stop the increase.

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