Highs, lows, fronts, and conflicting air masses frequent the ____
a. prevailing westerlies
b. polar region
c. doldrums
d. horse latitudes
a
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The United States with 4.5 percent of the world's population uses _____ percent of the world's energy resources.
A. 10 B. 15 C. 25 D. 40
Which extreme environment may have favored the origin of life on Earth?
a. polar sea ice b. hydrothermal vents c. estuarine bays d. dry mountain rocky outcrops e. rainforest sediments
Instructions: Choose one answer from each pair of selections. In a cold occlusion, the upper-level warm front PRECEDES | FOLLOWS the surface occluded front
Some metamorphic rocks are potential environmental hazards because
A) foliation can represent a plane of weakness in the rock B) the fluids that metamorphose the rocks can leave behind dangerous chemicals C) they are composed of unstable elements D) the crystals do not interlock as in igneous rocks