Do we have an obligation, as some green activists believe, to restore environmental conditions to the state which they were before human intervention?

No we don't have no obligation

Explanation:

But trust me if we don't help your town will suck and pollution will grow. So we should help but don't need to since we actually pay money for this changes even green activist pay. It is called tax.  

theodore roosevelt challenged william to a duel, whoever won, got their policy sent to congress. it ended up in a stalemate, and both men were injured and sent to the hospital.

i would say the executive branch is because the executive branch is in charge of enforcing the laws and judicial branch is in charge of enforcing but the executive branch is most responsible for it all so i would have to say the executive branch.