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Many depend on circumstances. A major component is cement, which has its own environmental and social impacts and contributes largely to those of concrete. The cement industry is one of the main producers of carbon dioxide, a greenhouse gas. [2] Concrete causes damage to the most fertile layer of the earth, the topsoil.
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 ...
Derba MIDROC Cement: MIDROC: 2012 [1] Habesha Cement: Habesha Cement S.C. 2008 [2] Lemi National Cement Factory: West China Cement East African Holding Company 2024 [3] [4] Messebo Cement Factory: Endowment Fund for the Rehabilitation of Tigray: 1997 [5] Mugher Cement Enterprise: Ethiopian government: 1984 [6]
Cement powder in a bag, ready to be mixed with aggregates and water. [1] Cement block construction examples from the Multiplex Manufacturing Company of Toledo, Ohio, in 1905. A cement is a binder, a chemical substance used for construction that sets, hardens, and adheres to other materials to bind them together.
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 ...
Nature has always been a powerful source of inspiration, with inventors diving into the world around them for new ideas. From the anatomy of animals to the behavior of plants, some of our most ...
Ethiopia has 20 cement factories which produce mainly OPC and PPC cement. Two other cement factories are in the pipeline. As of 2017, production capacity in Ethiopian, according to the Ethiopian Reporter, [14] has increased to 15 million tonnes per year, but local consumption is only 6 million tonnes per year.
U.S. farm industry groups want President-elect Donald Trump to spare their sector from his promise of mass deportations, which could upend a food supply chain heavily dependent on immigrants in ...