If you examine the changes in day-by-day electrical demand in the United States, the pronounced daily drop in electrical consumption is most closely associated with
A) people going to work.
B) people sleeping.
C) home heating and cooling systems.
D) daytime activities that consume little energy.
Ans: B) people sleeping.
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Barrow, Alaska has a
A) tundra climate. B) boreal climate. C) midlatitude steppe climate. D) tropical wet climate.
How much do mountains rise with each addition of 1000 meters of crustal material?
A. 2 meters B. 200 meters C. 20 meters
What is the approximate mixing time of the ocean?
a. 160 years b. 1,600 years c. 16,000 years d. 1.6 million years
Which of the following best matches the description?Class of pesticides that interferes with normal nerve impulses.
A. biocide B. soft pesticide C. persistent pesticide D. hard pesticide E. organophosphate F. biomagnification G. micronutrients H. chlorinated hydrocarbon I. micronutrient J. pheromone K. macronutrient L. rodenticide M. herbicide N. weed O. auxin P. macronutrients Q. fungicide