The __________ part of the North American continent is marked by north-south mountain ranges contained in the Rocky Mountains and Pacific Mountains and Valleys.
-northern
-southern
-interior
-western
-eastern
-western
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If an environment is changed by disruption, a different climax community always establishes
a. True b. False
Which of the following is NOT associated with an inferior mirage?
A) steep temperature differences near the surface B) the "puddle" of water on the road C) increasing density with height in the atmosphere D) reflection and refraction of raindrops
Relative to the A horizon, the B horizon of soil should have:
c a. low clay and high organic matter content b. high clay and high organic matter content c. high clay and low organic matter content d. low clay and low organic matter content
A(n) ________ represents a former meltwater channel or tunnel in glacial ice that was filled with sand and gravel
A) yazoo ridge B) esker C) valley plain D) kettle