Yana Usdi

The percentages seem high to me but large portions do come from the ocean, yes. We do still use the trees though. Consider the impact of someone from a sea level area who goes to Mile High staduim and has a hard time catching their breath in a long game. With any part of it cut out the total supply is reduced and we're more restricted, especially at altitude. The more discussed importance today though is as a carbon sink.

Carbon isn't an all or nothing deal, it's a matter of degree. Water is needed for life but if you drink enough you'll drown in your own body fluids, a woman died like that not too long ago as part of a radio stunt. Almost anything in too large or small of an amount or the wrong places can be a problem. Everything alive today is adapted to the temps and other environmental factors we've got now and a sudden change is often more than they can adapt to.

Rather than try to argue it out and explain it here I'll point you to a document that's already answered most questions people might have on the subject. The section you probably want is section 3, "It's Not Caused By CO2". The rest is worth a read though.

How to Talk to a Climate Sceptic : A Few Things Ill Considered

Anyone who tries to turn it into a "carbon is good/bad" argument on you either doesn't have a clue what the debate even is, or they find it useful to be intentionally dishonest. Too little water is bad, to much is bad. Too little or too much carbon pretty much the same. Not because it has any natural "harm" or poisonous quality as some dishonestly try to insinuate so much as the fact that everything alive today is adapted to the way things are now and if that's changed faster than they can evolve to adapt many will go extinct, and it will have large impacts on us as well. It already is in ways.

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