I know that the planet would be heating up anyway. Heck, it even cooled itself down and we had a mini-ice age in middle ages.
But that doesn't mean we are not contributing heavily.
There would be animals that go extinct even if we were not here, but at lower rate, and some woulnd't.

And in my post I mostly talked about how we destroy biome because of agriculture, factories and throwing shit away. :)

Thanks for the link, I'll look into it in few weeks, though I don't think I'd learn much new things.