Desert. Land of extremes

Description

This Science Screen Report studies how deserts form and how organisms adapt to these harsh environments. Defining a desert as a vast area of windy, arid land, the program identifies the Gobi and Sahara as common examples as well as regions of the Arctic and Antarctic. It demonstrates that many of these supposed wastelands contain surprisingly high levels of biodiversity, and shows how overgrazing and population increase can desertify forest habitats and farmland. This is an outstanding resource for illustrating ecological variety and fragility.

Runtime

20 min

Subjects

Genre

Date of Publication

[2006], c2005

Database

Films on Demand

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