Briefly describe the climatic variations that have occurred since the beginning of the Pleistocene epoch to the present day.
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You are hiking in the mountains and come across a cliff in which a vein of igneous rock is cutting across the layers of
sedimentary rock in the area. The igneous rock is ____ than the sedimentary rock. a. younger b. older c. thicker d. thinner e. dipping more steeply
Which of the following best following best explains what a contour line is?
a) a line that connects the peaks and valleys of an area b) a line that represents continuous points of equal elevation c) a line that connects all the high points on a topographic map d) a line that separates the tree from the grasslands on the shaded relief maps.
During the hydrologic cycle, water infiltrates the ground and then becomes groundwater. Hence groundwater can come from:
a. precipitation percolating through soils and sediment b. streams, lakes, and snowmelt that infiltrate c. seawater that evaporates d. all of the above e. both a and b
Mirages are caused by:
A) diffraction of sunlight. B) variations in air density. C) reflection of sunlight. D) scattering of sunlight.