Metamorphic rocks
A) are formed when molten material cools and solidifies.
B) are formed when rocks are subjected to great heat and pressure.
C) contain abundant fossils.
D) include shale.
Answer: B
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Why does a jacket keep you warm on a windy day?
A. The jacket prevents the wind from blowing away the layer of air that has been warmed by your body. B. Wind is the flow of cold air so the jacket prevents cold air from reaching the body. C. The jacket prevents water vapor from getting near your body and absorbing body heat. D. The jacket acts like a florist's greenhouse, trapping long-wavelength radiation near your body.
Thermohaline circulation is responsible for large-scale movements of ocean water and depends on both the salinity and the temperature of water
Indicate whether the statement is true or false
Figure 1.12 [PROD: Insert Figure 1.12 from the textbook.] Use the accompanying figure to answer the following questions. What changes first led to more rapid increases in population growth?
What will be an ideal response?
Energy efficiency is a measure of
A. Total energy consumed over a year divided by time spent B. Energy produced compared to energy consumed C. Energy used per unit of time D. Energy stored in a unit of fuel E. Heat produced by a barrel of fuel