For the graph (picture attached):

1) List the bifurcations that occur in this diagram. For each one, state what type of

bifurcation it is and at what value of r it occurs.

2) Suppose you can manipulate the carbon inputs to this system. If initially, r = 70 and X = 0.05, how could you manipulate r to raise X to approximately 1? Describe how X will change during the manipulations.