Attached is a great multimedia resource about the causes, effects and solutions to desertification. Can be used as an introduction to the topic or a revision tool.
The resources is produced by the United Nations Environmental Programme (UNEP) to highlight deserts ecosystems around the world and the problems caused by incresing desertification.
Go to the link below, scroll down to the link called 'Deserts and Desertification', click on English to watch:
http://www.unep.org/NewsCentre/multimedia/?ct=anim
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