Individual sand grains move along a beach:a
straight in the direction of the longshore current.
b. straight offshore.
c. in circles up and down the beach face but not horizontally down the beach.
d. in a zigzag pattern in the direction of longshore currents.
e. only during storms.
D
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Tradable pollution rights
A. are not a market strategy to reduce pollution and resource waste. B. does not allow companies to save unused credits for future use. C. can be effective, depending on where the initial limits are set and the rate at which they are reduced. D. have not been successful in reducing sulfur dioxide emissions in the U.S. E. can be used only for reducing greenhouse gas emissions.
The leading conflict over recreational land use occurs because
A. people have different opinions about what kind of recreational use is appropriate. B. some activities require monetary investment. C. some activities need more land than others. D. None of these are correct.
Which of the following sets of characteristics is typical of an r-strategist?
A. The population size tends to be strongly influenced by extrinsic limiting factors. B. The organisms tend to be small and have short life spans. C. The population tends to grow for a period and then crash followed by another growth period. D. All of these responses are correct. E. None of these responses is correct.
The shift toward renewable energy in Germany was spurred on by ____.
A. the military B. Asian industrialists C. U.S. business ventures D. foreign investors E. the German government