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\section{Predicted impacts for Africa}  Several studies have modelled and assessed the potential socio-economic and environmental impacts on the African content from climate change. \citet{de_Wit_2006} assess that predicted precipitation changes will significantly affect present surface water access across 25\% of Africa by the end of this century. A study done by \citet{Schlenker_2010} showed that with 95\% probability damages to yields of typical crops such as maize, sorghum, millet and groundnut are likely to exceed 7\% by 2050. \citet{JONES_2003} predict in their models a 10\% decrease in maize production until the mid-century. \citet{Hulme_2001} estimate a temperature increase between 2 to 6\circ C by 2100. \citet{kurukulasuriya2006ricardian} did an economic calculation estimate in which 10\% temperature increase leadsto a 13\% decline in net revnue for smallholder famers. 10\% increase in preciptiation would in turn, according to their calculations, lead to a 40\% net increase in revenue. Another climate study done by \citet{Burke_2006} predict increased droughts over Northern Africa and a wetting over central Africa.  Table \ref{table:literatureReview} provides a summary of the different studies.