Population 7 billion
This website is used for extra credit. The actual assignment will be given in class.
The link address is: http://www.npr.org/2011/10/31/141816460/visualizing-how-a-population-grows-to-7-billion?ps=cprs
The link address is: http://www.npr.org/2011/10/31/141816460/visualizing-how-a-population-grows-to-7-billion?ps=cprs