Often, the costs of addressing an environmental problem are _____term, whereas the benefits are ____term
a. long; short
b. short; long
Answer: B
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After the proper wet-bulb-measuring procedure, the two thermometers on a sling psychrometer yield the same temperature. This indicates that ________.
Inuit people who live in the Arctic tundra have high levels of DDT in their bodies, but live and work far from areas of industrial pollution. They eat seals and fish; seals eat fish. Which mechanism accounts for the high concentrations of DDT?
A. biological magnification B. optical magnification C. drinking Groundwater D. absorption through skin
A four-field rotation system is used in which type of agriculture?
A) intensive subsistence agriculture B) swidden C) extensive subsistence agriculture D) mixed crop and livestock farming agriculture E) all of the above
Volcanic eruptions rich in ____ can produce red sunsets
a. water vapor b. sulfur c. methane d. carbon monoxide e. nitrogen