What is the mechanism by which tectonic plates move?
A. Convection within Earth’s mantle.
B. Plate drift.
C. Subduction of smaller plates.
D. Earthquakes.
Correct Answer: A (Convection within Earth’s mantle)
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A. Convection within Earth’s mantle.
B. Plate drift.
C. Subduction of smaller plates.
D. Earthquakes.
A. 1960s
B. 1980s
C. 1970s
D. 1950s
A. Epsilon Aurigae
B. Proxima Centauri
C. Sirius
D. Sun
A. Thermometer
B. Barometer
C. Hygrometer
D. Anemometer
A. 10
B. 22
C. 32
D. 42
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A. 45
B. 52
C. 60
D. 365
A. less than 28%
B. about 75%
C. about 87%
D. about 97%