41. The phenomenon of an opening occurring in the earth’s surface through which a jet of hot water and steam is forces out at irregular intervals is called

A. Crater
B. Geyser
C. Hot spring
D. Volcano

42. The northern hemisphere and the southern hemisphere are separated by

A. The International Date line
B. The plane of the equator
C. The plane of Tropic of Cancer
D. The plane of Tropic of Capricorn

43. The process of soil development is called

A. Leaching
B. Illuviation
C. Eluviations
D. Pedogenesis

44. The phosphate are a group of minerals of one or more metallic elements chemically associated with the phosphate compound ____

A. oxides
B. silicates
C. carbonates
D. phosphates

45. The Panama canal links

A. Canada with Greenland
B. North America with South America
C. Siberia with Greenland
D. None of the above