From a standing jump, the vertical height reached by a basketball player who achieves a hang time of a full 1 s is about
A. 0.8 m.
B. 2.5 m.
C. 1 m.
D. 1.2 m.
Answer: D
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General circulation models ________ observed global temperatures
A) have successfully simulated B) are unable to successfully simulate C) are not used to simulate
Sustainable agriculture has many goals. One of the primary goals is best described as ________
A) converting forestland into productive cropland B) converting desert land into productive cropland because of the growth in desalinization technology C) increasing the use of chemical fertilizers and pesticides D) making an effort to maintain productive topsoil E) encouraging the growth of large-scale agribusiness because it is the most economically viable form of agriculture
Under what conditions is swidden cultivation sustainable?
A) when population densities remain low, and where upland people control enough land B) when there is a large number of people to do the hard, manual labor associated with swidden C) when private entities purchase land for development D) when the government intervenes to control land use E) when long-term weather patterns provide adequate moisture and warmth
How does the asthenosphere differ from the lithosphere?
A) The asthenosphere is the outermost layer made of solid rock while the lithosphere is the innermost layer made of molten rock. B) The asthenosphere is the innermost layer made of molten rock while the lithosphere is the outermost layer made of solid rock. C) The asthenosphere is at the core of the earth and the lithosphere surrounds it. D) The hundred-kilometer plates of the lithosphere rest upon the weaker and less rigid rock of the asthenosphere.