ICTs are a potentially powerful tool for extending educational opportunities, both formal and non-for mal, to previously underserved constituencies—scattered and rural populations, groups traditionally excluded from education due to cultural or social reasons such as ethnic minorities, girls and women, persons with disabilities, and the elderly, as well as all others who for reasons of cost ... Brief disadvantages of hydroelectric power: 20% of total electrical energy is generated from the hydroelectric power plant in the world. So in spite of seeing only advantages of hydroelectric energy we should see another side also. list of Disadvantages of hydroelectricity is below: Hydroelectric power generation creates environmental consequences The regiocentric approach is adaptable to the company and product strategies. When regional expertise is needed, natives of the region are hired. If product knowledge is crucial, then parent-country nationals, who have ready access to corporate sources of information, can be brought in. For example, Brazil uses its huge crops of sugar cane to produce fuel for its transportation needs.  Now, we shall analyze the advantages and disadvantages of ethanol use as a source of energy. Brazil and Ethanol: Advantages. The advantages of ethanol use for energy production in Brazil are diverse.