Photochemical smog differs from industrial smog in that it ________
A) is an unhealthy mixture of pollutants
B) is primarily composed of carbon monoxide
C) consists of primary pollutants
D) is formed only in the presence of sunlight
E) has large quantities of soot
Answer: D
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Ancient Greek investigators discovered
A. that Earth rotates daily. B. Earth's circumference. C. why things float. D. all of the above
Which of the above sections of this molecule would be considered an unsaturated portion of the molecule?
A. a B. b C. c D. a and b E. all of the above
When fluid lava erupts onto the surface, it typically produces
A) lava flows. B) lava domes. C) ash columns. D) pyroclastic flows.
Why does the moon have more of an impact on tides than the sun?
a. The size of the moon is more in balance to Earth. b. The moon is closer to Earth. c. The sun has more power over the tides than the moon. d. Earth revolves around the sun. e. The moon revolves around the sun.