46. One advantage of inland water ways is that
A. They are flexible
B. They are fast
C. Goods are transported cheaply
D. Rivers, at times, flow through areas of limited commercial value
47. Which of the following is a demerit of low population density?
A. Low crime rate
B. High per capita income
C. Inadequate labour force
D. Low pressure on social amenities
48. The most difficult problem facing lumbering in Zaire is that the
A. Woods are too hard and difficult to process
B. Logs are too heavy to be moved to the sawmills
C. Economic trees are not found in pure stands
D. Other countries are competing with Zaire in lumbering activities
49. Which of the following vegetation types is found only in the Northern hemisphere?
A. Tropical grassland
B. Equatorial forest
C. Tundra
D. Mediterranean
50. One effect of rural-urban migration on the source region is
A. Rapid urbanization
B. Intensive pressure on land use in rural areas
C. Rural depopulation
D. Urban depopulation