Which of the following is NOT a characteristic of groundwater discharge areas?
a. topographic low points
b. deep water table
c. alkaline soils
d. abundance of phreatophytes
b
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The maximum pressure range of the atmosphere, as defined by the highest and lowest pressures ever recorded, is between:
A) 720-1335 millibars. B) 870-1085 millibars. C) 0-1000 millibars. D) 975-1035 millibars. E) 660-1335 millibars.
What known greenhouse gas is released from manure at large animal feedlots?
A. methane B. carbon dioxide C. nitrogen gas D. ozone
During the June solstice, the circle of illumination completely shades out
A. points south of the Arctic Circle but completely illuminates points north of the Antarctic Circle. B. points south of the Antarctic Circle but completely illuminates points north of the Arctic Circle. C. points north of the Arctic Circle but completely illuminates points south of the Antarctic Circle. D. points north of the Antarctic Circle but completely illuminates points south of the Arctic Circle.
What do astronomers expect will be left at the center of our solar system once the Sun has gone through all its life stages?
A. a red giant B. a wormhole C. a planet-sized diamond D. a black hole