النتائج (
الإنجليزية) 3:
[نسخ]نسخ!
3, a weak contribution to mineral resources in the economic development.Prepare customs Alfsfat modestly due to lower its price is accounted for by the producing countries in the world, but to create chemical industry including Morocco, Tunisia Mmaa allowed the export of sulfur acid. The fertilizer Alfsfatyt Twryad Lhajyatha mining most of other countries. The declining role of mineral resources in the economies of the Arab world Ttwar reversed their extractive industries in its contribution to the gross domestic product in the Arab world 28% thanks to oil revenues. And a gas.III varieties of water resources and mobilized in the Arab world.1 of available water resources.Tsnaf into two classes:- surface water resources available: Tqdar B 179000000000 m3 / year water resources Ttmthal varying runoff, rivers and valleys, they came from areas outside the Arab world Kdjlt Euphrates and the Nile, so it is not Althkam sources exploited only in accordance with agreements between the countries involved in river basins. of underground water resources, available water resources Tqdar total counts of the Arab world.254300000000 m3. It is divided into two classes:The traditional resources: Ttkwan of surface water (197300000000 m3) of underground water Mtjdadt and Mlyarm reborn (43).Non conventional resources is treated water and tap water (14000000000 m3) of water these items vary from region to region.Ttkwan groundwater resources of renewable resources, whether surface (50 m) deep and round (M + 50), as well as resources. With a water Ahfwryt Tjmat underground during the geological times.2 kinds of water mobilization in the Arab world.. Traditional forms of packaging, a variety of forms, which were being used in surface waterSuch Walswaqy and Walnawrt... Which is used in Calabar, tunnels, underground aquifers and water of the eyes.. Modern packaging forms: most large water facilities are such that the valleys of the Maghreb and the Nile and the Euphrates. Medium and small enterprises such as the mountain lakes and deep wells.To find other forms of modern Kastkhraj Alahfwryt water use in irrigated areas. Can we find the water system of water transfer to long distance including Libya and Tunisia.3. * the water balance:Ttmthal compatibility between the resources available or already available and the needs of the population and economic activities.Despite the importance of the resources available are not enough because of the Ltrajha increased consumption.Per capita Arab 500 m3 / s. A watermark is critical.To the problem of poor water quality, higher salinity, chemical pollution and domestic waste water poverty suffer most of the Arabs.Conclusion:Varying the primary resources among the countries of the Arab world, along with its limited role in the economic development. As the water continues to be inadequate.
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