What two reasons best describe why the tropics get so hot during their summer solstices?
a. The intensity of the sun's rays are intense, and the close proximity to the equator
b. The proximity to regions of warm ocean water, and the long day
c. The long day, and the intensity of the sun's rays
d. The proximity to regions of warm ocean water, and the proximity to the equator
c
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The surface pressures at the bases of warm and cold columns of air are equal. Which of the following statements describes what is occurring?
A. Pressure decreases with increasing height at the same rate in both columns. B. The cold air is lighter than the warm air. C. The columns of air contain a different total number of air molecules. D. The weight of each column of air is the same.
Which of the following would not be part of the drug discovery process?
A. examining folklore for herbs and potions B. changing an old drug a little and testing the new drug for activity C. random testing of new compounds for drug activity D. learning the exact shape of various receptor sites E. All of the above are part of the process.
Because of their dependence on one or a few export crops, the Central American countries are sometimes called
A. tourist havens B. dictatorships C. backward D. banana republics
Jellies are an example of which of the following?
A) Cnidarians B) Coccolithophores C) Ctenophores D) Foraminifers E) Radiolarians