Explain in general why the rate of slope change can be used to predict population change. 

Number #3

    The rate of slope change can be predicted by the previous history of the populations change. The numbers can increase or decrease by the percentage given. It will follow the pattern of going uphill or downhill determining on the numbers. Unless the numbers have reached a certain point where they cross over and population becomes stronger in tree one than the other, then, the graph and slope would begin to change course. But, however, the numbers will continue to follow suite with the given data.