(A) Aridity, calculated by precipitation divided by reference evapotranspiration, in selected countries of the Arab world, 2007 Adapted from Bucknall,22 with permission of the World Bank. (B) Land use in Arab countries for which data were available and for the Arab world overall, 2008; data are from Kassas.19 (C) Demand for, and availability of, cereals (including feed) in the Arab world, 2000–30; reproduced from the International Food Policy Research Institute′s Middle East and north Africa strategy report,23 by permission of the International Food Policy Research Institute.