How can the energy efficiency of coal-burning power plants be doubled?
A. cogeneration
B. recycling
C. burning the coal more than once
D. convection ovens
Answer: A
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GCMs are used to predict specific temperatures in the near and long-term future
Indicate whether the statement is true or false
The area of land from which all water in it drains into the same place is known as a(n)
A) drainage divide B) watershed. C) fluvial units. D) interfluve.
Your kid brother predicts that another earthquake will occur in the San Francisco area. Is his prediction likely to come true?
A) Yes, because a tectonic plate boundary runs through the San Francisco area. B) Yes, because earthquakes always occur in clusters. C) Yes, because there is a hot spot under San Francisco. D) Yes, because San Francisco hasn't had a big earthquake since 1906.
Earth's internal structural layer with the highest material density is the:
a. mantle. b. outer core. c. asthenosphere. d. crust. e. inner core.