The Earth's magnetic field is generated by
A. convection currents in the asthenosphere.
B. aligned magnetic minerals within Earth's inner core.
C. salty water moving through the deep parts of the crust.
D. movement of iron and electrical currents within Earth's outer core.
Answer: D
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Fill in the blank(s) with correct word
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a. continental shelves b. continental slopes c. deep-ocean floor d. continental rises e. submarine canyons
Which the following are the positively charged particles in an atom's nucleus?
A) protons B) neutrons C) ions D) electrons
Which of the features labeled on this figure is a terminal or recessional moraine?
A. A B. B C. C D. D E. E