What's the difference? Even if it's not anthroprogenic it is happening and it will destroy large parts of the ecosystem. The cause is irrelevant. Unchecked climate change will inflict trillions in economic damages and billions of lives.

If you don't agree with the fact that this is happening and that we must do something about it, you're a climate denier. Whether we caused it or not (and we absolutely, definitely did) the effect is the same and the solutions are the same.

Jackass.