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Africa and the Middle east; a continental Overview of Environmental Issues. Santa Barbara: ABC-CLIO. Maddox, G.H. (2006). Sub-Saharan Africa: An environmental history. Santa Barbara, CA: ABC-CLIO. McCann.J.C.(1990). "A Great Agrarian cycle? Productivity in Highland Ethiopia, 1900–1987," Journal of Interdisciplinary History, 20:3, pp. 389 ...
The environmental impact of concrete, its manufacture, and its applications, are complex, driven in part by direct impacts of construction and infrastructure, as well as by CO 2 emissions; between 4-8% of total global CO 2 emissions come from concrete. [1] Many depend on circumstances.
The Gilgel Gibe III Dam is 610 m-long (2,000 ft) and 243 m (797 ft) high roller-compacted concrete dam. It withholds a reservoir with a capacity of 14.7 km 3 (3.5 cu mi) and a surface area of 210 km 2 (81 sq mi), collecting with a catchment area of 34,150 km 2 (13,190 sq mi).
The leaders of the three nations, which all have tensions with Ethiopia, agree to greater co-operation. Skip to main content. 24/7 Help. For premium support please call: 800-290-4726 ...
In the Awash basin in central Ethiopia floods and droughts are common. Agriculture in the basin is mainly rainfed (without irrigation systems). This applies to around 98% of total cropland as of 2012. So changes in rainfall patterns due to climate change will reduce economic activities in the basin. [5] Rainfall shocks have a direct impact on ...
For many years, lead cell batteries were destroyed there and the lead was extracted, leaving the untreated cases on site. An environmental assessment showed that the site was contaminated due to the presence of heavy metals, lead and hydrocarbon pollution. Cement based S/S was employed to successfully remediate 600 tonnes of contaminated soil. [10]
It is not known exactly to what extent dams in Ethiopia would reduce the flow of water to Sudan and Ethiopia. Assuming an evaporation rate of 1 meter per year, an irrigated area of 200,000 hectares and a combined reservoir area of 1,000 km2, the flow of the Nile could be reduced by 3 billion cubic meters per year, equivalent to about 5 percent ...
Environmental pressure increases as a result of globalization.” [33] Globalization has spurred the development of complex supply chains and trade networks that connect resource-rich regions with centers of production and consumption across the globe. While this interconnectedness has fueled economic growth and development in some regions, it ...