The desert is often seen as lifeless. Although it is a very harsh and dry environment, it is actually home to a very large, varied and delicate ecosystem. In this episode of Environment and Ecology, students will learn about the amazing variety of life forms that thrive in some of the most extreme conditions on Earth. Take students on an adventure through the deserts of the world and learn how the Sahara, the Kalahari, the Namib, and the southwestern US deserts were formed, and how their inhabitants adapted to survive.When sold by Amazon.com, this product will be manufactured on demand using DVD-R recordable media. Amazon.com's standard return policy will apply.