Rocks with an imprint of Earth's magnetic code contain
A. polarity, latitude of origin, and the direction of the magnetic pole at the time of formation.
B. the rock's polarity, magnetic-pole direction, and the altitude of the magnetic pole.
C. polarity, latitude of origin, and fossils indicating the age of the rock.
D. all of the above
Answer: A
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If a country is experiencing a negative net migration rate, then
A) more people are leaving the country than moving to it. B) more people are moving to the country than leaving it. C) a negative net migration rate does not tell us anything. D) more people are dying in the country than are being born. E) the number of people leaving the country is equal to the number moving there.
Which of the following statements is true?
A) In light atoms there are generally many more protons than neutrons. B) In light atoms there are generally many more neutrons than protons. C) In light atoms the number of protons and neutrons are nearly equal. D) Most naturally occurring isotopes of light atoms are radioactive.
Which principle best describes why melting occurs first in snow around tree trunks?
a. Snow is a good absorber of infrared energy. b. Snow is a poor emitter of infrared energy. c. Snow is a poor reflector of visible light. d. Snow is a poor absorber of visible light. e. Snow is a poor absorber of ultraviolet light.
Which of the following is an assumption of neoclassical economics?
A) All citizens deserve just and equal economic and sociopolitical treatment. B) Long-term effects and planning are important. C) External costs and benefits are valuable. D) Economic growth is a means toward greater human well-being. E) Resources are finite and should be conserved for the greater good of society.