In a flower, the sticky structure that helps to trap pollen is known as the
A. anther.
B. stigma.
C. ovary.
D. stamen.
Answer: B
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The temperatures in a fractionating tower at an oil refinery are important, but so are the pressures. Where might the pressure in a fractional distillation tower be greatest, at the bottom or at the top? Defend your answer.
A. The pressure is greatest at the bottom because the lower temperature means a greater number of vaporized molecules. B. The pressure is greatest at the bottom because the higher temperature means a greater number of vaporized molecules. C. The pressure is greatest at the top because the higher temperature means a greater number of vaporized molecules. D. The pressure is greatest at the top because the lower temperature means a greater number of vaporized molecules.
How is an inventory of past slide movement usually obtained for input into GIS?
A) A geologist walks the entire area and makes detailed surface observations. B) A geologist looks at aerial photographs of the area. C) A team of geologists makes surface observations and takes core samples to analyze in the lab for evidence of past movement. D) Past recorded seismographs are analyzed by computer technology.
Continued catches above the maximum sustainable yield ________.
A. will result in a decrease of fishing effort B. can be increased to prevent overfishing C. must be decreased in order to decrease population size D. will result in overfishing and the crash of fish populations E. will result in underutilization
Which type of meteorological instrument is used to collect the necessary data for the production of upper-level weather charts?
A) mercury barometer B) hygrometer C) radiosonde D) altimeter