Central Question: Where are the planet's arid and semi-arid regions located, and how does their physical location impact the ecosystem?
Guiding Thought Question: What perceptions do you have of a desert? Why might those perceptions not be exactly true? Provide an example
Today's Learning Objective: Students will discuss issues related to the world's arid and semi-arid regions, and take notes about where and why deserts are located where they are, and what are some particular issues related to deserts.