41. The Ice age ended about ____ years ago.
A. 140
B. 1,400
C. 14,000
D. 140,000
42. The languages used in China is
A. Chinese, English
B. Chinese, Arabic
C. Chinese, French
D. Chinese, Korean
43. The islands with coral covered surfaces in the Bay of Bengal are
A. Andaman islands
B. Nicobar islands
C. both (a) and (b)
D. None of the above
44. Within the transporting medium, transport can occur by
A. suspension
B. solution and traction
C. solution
D. All of the above
45. The length of the day is determined in
A. astronomical units
B. solar terms
C. length of the hours
D. None of the above