Earth is a closed loop, There is no more carbon and no less carbon than there has always been, no more water and no less water. all mankind has done is convert it from one state to another. the earth does a fine job of taking care of itself. too may people populate an area, a storm and/or a flood will discourage habitation of that area. the earth ended up and stays in the Goldilocks zone that no other known planet has done. the earth is not a dead planet. it is actively living and in control. have a little faith in your host.