46. Irrigation projects are commonly found in areas of
A. Low and unreliable rainfall
B. High surface fluctuations
C. Low rate of evaporation
D. High volume of rainfall
47. All the following lead to the depletion of the ozone layer except
A. Volcanic eruption
B. Bush burning
C. Combustion of coal and oil
D. Evapotranspiration
48. More Hydro-Electric power (H.E.P.) projects should be constructed in developing countries because
A. There is abundant rainfall
B. There is ever increasing demand for power
C. Skilled labour is abundant
D. There are many waterfalls on their rivers
49. It is light in weight, a good conductor of electricity and used extensively in the manufacture of aircraft. This is a valid description of
A. Aluminium
B. Iron
C. Uranium
D. Silver
50. A village is characterized by
A. The presence of several refineries
B. Availability of tertiary health care facilities
C. Developed infrastructural facilities
D. Agriculture and other primary economic activities