After reading chapter 4, hit the internet or library and research some of the keystone species from the ecosystems located your hometown or homestate.  When using the internet, try to use trustworthy sites (government sites, academic sites, environmental organization sites, etc.), rather than “Bob’s Keystone Species Website”, to gather your facts.  Using the discussion board, tell the class about the ecosystem you chose and the keystone species you researched- specifically what role this species plays in the ecosystem to be considered a keystone species.  Do the role these various species you all researched have anything in common?   If you are unable to find any information on the ecosystems near your actual town choose another nearby.