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Deserts and Parks

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Information about Deserts and Parks
Science-Technology

Published on January 8, 2009

Author: aSGuest9688

Source: authorstream.com

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Deserts and Parks : Deserts and Parks World Wide deserts : World Wide deserts Exist between 15 and 30 N and S Only Europe lacks warm deserts. Estimates predict that the world should have 1/3 deserts Reality= 42%desert. Desertification : Desertification The change in semi-arid and dry shrub lands (marginal) to deserts as a process of climate and human activities. Human practices… To much farming To much grazing Poisoning of soil To much pesticide use “ “Nitrates Over Irrigation-salts are left Lowering of water table Continent with greatest desertification : Continent with greatest desertification Africa Changing of natural weather patterns A product of a warming climate. Solutions : Solutions Change in agricultural practices Looking at the whole ecosystem Genetic revolution Creating low water and salt species National Parks : National Parks Based on conservation biology. The science of keeping the diversity in natural environments. World wide Philosophy : World wide Philosophy 120 countries have national parks. There are 1100 parks world wide. The first USA 1912 There are 54 of them in the USA Most in the west The closest to us is the (Shenandoah National Park)

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