If a compass is moved from the northern hemisphere to the southern hemisphere, its magnetic needle will change direction
A) by 180°.
B) depending on where the measurement is taken.
C) by 90°.
D) hardly at all.
E) none of the above
D
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According to many experts, which of these options would be most successful at slowing population growth in less-developed countries?
A. Empowering women with education and opportunity to start businesses B. Appointing younger men as tribal leaders C. Allowing foreign agencies to provide child care D. Allowing girls to skip school so they can contribute more to their families
Which of the following statements describes the air motions beneath and between fair-weather cumulus (cumulus humilis) clouds?
A. Downdrafts occur beneath them, and updrafts occur between them. B. Updrafts occur beneath them, and horizontal motions occur between them. C. Downdrafts occur beneath them, and horizontal motions occur between them. D. Updrafts occur beneath them, and downdrafts occur between them.
How do glaciers move?
A) uniformly, as one rigid chunk B) faster at the edges and slower in the middle C) faster in the middle and slower at the edges D) faster on top, slower in the middle, and faster on the bottom
Only about 2.5% of all the water on our planet is fresh water, and ________
A) most of this is far from where humans live B) over half of this is in wetlands near coastlines and is becoming contaminated with saltwater C) over half of this is extremely hard water and is nearly unusable for drinking or agriculture D) most of this is in underground aquifers E) most of this is in large, freshwater lakes