The U.S. national park system includes ____ major national parks.
A. 12
B. 28
C. 58
D. 100
E. 110
Answer: C
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The theory of genetics was initially developed by studying
a. giraffes. d. mice. b. peas. e. cyanobacteria. c. humans
The presence of ____________ on a planet could be an indication of past or present forms of life. Fill in the blank(s) with the appropriate word(s)
You are the chief executive officer (CEO) of a large bus company that transports passengers long distances across the United States
You want to be environmentally "friendly" and are considering replacing your older buses with those that run on hydrogen fuel. However, your executive board dislikes the idea. Which one of the following arguments is valid and could be used by the board to dissuade you from adding hydrogen-fueled buses to your fleet? A) Hydrogen vehicles are actually more polluting than gasoline-powered buses, so the environmentally friendly thing to do would be to add gasoline-powered buses to the fleet. B) Hydrogen vehicles are unsafe and have been known to spontaneously combust when rear-ended. C) Hydrogen vehicles have a range of only around 50 miles, and they take hours to refuel, so hydrogen buses would not be a wise choice for vehicles traveling across the country. D) It may be difficult along some bus routes to find gas stations that sell hydrogen fuel.
Which of the following locations would have low July dew-points, primarily because of the rain shadow effect?
A. A B. B C. C D. D