A) Tectonic uplift in the Cenozoic era. B) The collision of continental plates about 150 million years ago. C) Erosion by glaciers during the Pleistocene epoch. D) Volcanic activity during the Mesozoic era.
A) The Pinedale Glaciation. B) The Wisconsinan Glaciation. C) The Vashon Glaciation, which lasted from about 19,000 – 16,000 BP. D) The Illinoian Glaciation.
A) The Salish Sea. B) Lake Erie. C) Great Salt Lake. D) Lake Michigan.
A) Rocky Mountains and Sierra Nevada. B) Pacific Ranges and Vancouver Island Ranges. C) Cordillera Blanca and Andes. D) Appalachian Mountains and Cascade Range.
A) Sand dunes and desert basins. B) Volcanic mountains and lava plateaus. C) Karst topography with limestone caves. D) Glacially striated tablelands and rolling hills underlain by sedimentary rocks.
A) Chernozem and podzol. B) Alluvial soils and loess. C) Soils formed from glacial till, glacial outwash, and Lacustrine deposits. D) Lateritic soils and peat bogs.
A) Fraser Lowland, Nanaimo and Nahwitti lowlands of Vancouver Island. B) Ozark Plateau and Black Hills. C) Pocono Plateau and Allegheny Plateau. D) Great Plains and Mississippi Alluvial Plain.
A) The Puget Sound basin. B) Colorado Plateau. C) Great Basin. D) Columbia Basin.
A) Salish Sea. B) Gulf of Mexico. C) Hudson Bay. D) Bering Sea.
A) Earthquakes and volcanic eruptions. B) Natural wildfires and droughts. C) Asteroid impacts. D) Industrialization, agriculture, forestry, urbanization, and suburban sprawl.
A) High elevation. B) Extreme elevation. C) Low elevation. D) Variable elevation. |