Oh, For Pete's Sake!
All the CO2 I'm releasing into the atmosphere comes from the crazy biomass known as fossil fuel. It got there from the atmosphere, gazillions of years ago. All I'm doing is putting it back, OK?
And as for the claim that 'water is a scarce resource', I live in Sheffield. I'm up to my neck in the stuff. And I'm creating plenty more by burning that fossil fuel I mentioned earlier.
OK, now shoot me down in flames ...