Thiols are most closely related to which of the following classes of compounds?
A) alcohols
B) aldehydes
C) carboxylic acids
D) ketones
A
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A. clay in the zone of saturation B. sandstone in the zone of saturation C. unfractured granite in the zone of saturation D. gravel in the zone of aeration
What is the greenhouse effect? What are the gases involved in this process? What are some of the events that could happen if global warming progresses?
Infrared satellite detectors
A) detect shortwave radiation. B) emit waves at the 6.7 micrometer frequency. C) receive a weaker signal from a tall cloud than from a low-lying cloud. D) have been phased out in favor of water vapor detectors.
The scale of "an inch on the map represents two miles on the surface of the Earth" would be CLOSEST to which representative fraction?
A) 1:120,000 B) 1:200,000 C) 1:1,000,000 D) 1:60,000 E) 1:12