Over geologic time,most of the heat lost from Earth's interior has been transported by
A) conduction.
B) convection.
C) radioactive decay.
D) solar radiation.
Correct Answer:
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Q31: Based on seismic tomographic images,how deep do
Q32: Which of the following regions is the
Q33: What cause large-scale variations in Earth's geoid?
A)variations
Q34: What causes the sharp increases in the
Q35: Where is Earth's magnetic field generated?
A)in the
Q37: The mechanical transfer of heat by vibration
Q38: Which of the following statements about Earth's
Q39: What element makes up most of Earth's
Q40: Seismic tomography has revealed that seismic waves
Q41: How much of Earth's magnetic field can
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