51. The term used to describe the combined effect of all shortwave losses in

A. Earth scattering
B. Earth radiation
C. Earth albedo
D. None of the above

52. The time difference between each side of the International Date line is

A. 12 hours
B. 24 hours
C. 36 hours
D. 48 hours

53. The soil used for cutting bricks, use in the construction of houses is

A. Black Soil
B. Laterite Soil
C. Alluvial Soil
D. Saline and alkaline Soils

54. The sidereal month may be defined as

A. The period in which the moon completes an orbit around the earth
B. The period in which the moon completes an orbit around the earth and returns to the same positions in the sky
C. The period of rotation of the moon
D. None of the above

55. The shallow seas found in the Atlantic basin include the

A. Caribbean Sea and Mediterranean
B. Baltic and Arctic seas
C. Gulf of Mexico
D. All of the above