Nothing we do to this planet is something it hasn't had before.
Take the oil leak for example, oil deposits from over millions of years then seismic movement would cause these to release at some point ( I imagine this must have happened ) and you'd have practically the same situation we have now.
Carbon monoxide in the atmosphere, look at various volcanic eruptions throughout history.
It'll all work out
[You must be logged in to view images. Log in or Register.]