Which of the following represents the most recent time that thick sheets of ice advanced over North America as far south as New York?
A. 18,000 to 22,000 years ago
B. 45,000 to 50,000 years ago
C. 250,000 to 500,000 years ago
D. 2 million years ago, at the beginning of the Pleistocene epoch
Answer: A
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What is the elevation at the bottom of the depression southwest of Pine Hill?
The question is based on this contour line map with elevations shown in feet.
• North is to the top of the map.
• Streams are shown with dashed lines.
• A graphic scale for measuring horizontal distances is shown below the map.
• Estimate elevations between contour lines to the nearest half-contour interval; assume that the top of a
hill is one-half-contour interval higher than the highest contour line shown.
What will be an ideal response?
Why is biomass energy renewable?
A) Once forest wood is burned, the forest is not replanted. B) Once plants are harvested, the soil in no longer fertile for replanting and regrowth. C) Once plants are harvested, they can grow again if proper conditions are provided and rate of harvest does not exceed rate of planting. D) There are always more plants growing somewhere on Earth. E) Any living organism is considered renewable.
On a surface leveled by erosion the pattern of exposed beds of a plunging fold resembles that of the letter ________.
A. X B. H C. I D. T E. V
By sending Russians to the far reaches of the Soviet Union, the Russian government hoped to consolidate its control over the various republics, and to dilute the strength of the minority ethnicities.
a. true b. false