46. The hot, dry wind on the east or leeward side of the Rocky mountains (North America) is called

A. the Chinook
B. the Sirocco
C. the Harmattan
D. the Loo

47. The islands of Seychelles are located in the

A. Arctic Ocean
B. Atlantic Ocean
C. Indian Ocean
D. Pacific Ocean

48. The island of Sri Lanka formerly known as

A. Madagascar
B. Tasmania
C. Ceylon
D. None of the above

49. The highest sand dunes are found in

A. the Sahara desert
B. the Atacama desert
C. the Kalahari desert
D. the Gobi desert

50. The greatest variety of animal and plant species are found in

A. temperate grasslands
B. tropical moist forests
C. tundra regions
D. in hot deserts