Wow! I didn't know that!

Where deforestation has taken place to make way for cultivation, soils have been exposed to higher precipitation and temperatures. These processes deplete the soil’s organic matter, the soils harden and turn to desert. In 1882, desert or wasteland covered an estimated 9.4 percent of the Earth’s surface. By 1952 that area had increased to nearly twenty-five percent. It is a growing trend and one which, once it has happened, is very difficult, if not impossible, to reverse. http://www.second-opinions.co.uk/vegetarian.html#N_4_

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