Which phenomenon does not usually cause graded beds?
A) turbidity currents
B) river floods
C) storm waves
D) tides
Answer: D
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Given that the diameter of the average raindrop is 100 times that of the average cloud droplet, the volume of the average raindrop is about this many times greater than that of the average cloud droplet:
A) 100 times. B) 1000 times. C) 10000 times. D) 1000000 times.
Why is the hole in the ozone greatest over Antarctica?
A) The Coriolis Effect produces the ozone hole and is greatest in the polar regions. B) Ozone, a greenhouse gas which traps ultraviolet energy radiated from the Earth's surface, has highest concentration in Antarctica. C) South American countries have not ratified the Montreal Protocol and continue to release ozone-destroying CFCs. D) Because of a combination of thin, icy clouds and Antarctic wind patterns which trap chlorine freed from CFCs. E) The ozone hole is a natural phenomenon related to high polar stratospheric clouds.
Which of the following is NOT true of the freezing point of water?
A) There is a single freezing point, 0°C (32°F). B) Freezing point varies with volume and atmospheric conditions. C) Purity of water can influence freezing point. D) Freezing point ranges from 0°C to -40°C (32°F to -40°F).
The higher the basic/nonbasic ratio, the greater the multiplier effect in economic development while conversely, the higher the decline in the basic sector, the greater the drop in nonbasic employment.
Answer the following statement true (T) or false (F)