This is a great PowerPoint I put together on Pandemics and how they affect the world population.
I wrote this PowerPoint for my AP Environmental Science course but I think it would go well with a biology course, too.
It goes through different pandemics that have resulted in diebacks throughout human population and talks a lot about the Spanish Flu (which affected Edward Cullen in Twilight) and the Black Plague.
There's a great assignment at the end that has students research different diebacks throughout history and about the carrying capacity of environments.
This is one of my favorite presentations I've put together for my APES class.
Let me know how it goes!