grapgh reading

hi, everyone my name is salem and i`m studying business administration at lagaurdia community college. for one of my classes i`m supposed to pick up a graph from a book climate casino and explained. the graph that i pick up is on page 55 . underneath the graph we have a paragraph which explains the graph . it says that there is to phase for the planet situation today, which are the equilbre and disequilibrium side and both related with a non linear relation.to illustrate the movement from a situations to another and its causes, they put a boll in the first phase and showed its movements under some effects. the boll in the first situation according to the passage is easy to go to the next phase but once it gets there ill stuck and won`t be able to get back to the previous situation. this means that earth were in stable natural conditions where everything works under a visible hand, but after the human activities it start changing. the fist phase was earth before emission of co2 and other green house gases. the second comes after the emission of quantities of co2 that are over the capacity of the planet and that`s what pushes our planet to the other side of the red line. the bad news which constitute the importance of the graph is the matter fact that we can go from one to two but the door will close and we wont be able to come back to the equilibrium situation as we were before. it seems that everything is done already according to the graph. i disagree with the graph which is showing that just a few more pollution will take us from point A to B when it says "small stress can push the boll to the other side". i don`t think is this much small quantities could do that because we already put to much. however, we still in stable situation beside some changes in the climate.