Which currents are the slow, deep currents that affect seawater beneath the pycnocline?
a. deep-ocean
b. thermocline
c. surface
d. thermohaline
e. turbidity
d
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Wolves were reintroduced to the Yellowstone ecosystem in ____.
A. 1620 B. the 1920s C. 1954 D. 1995 E. 2003
This country does NOT border the Red Sea:
A) Iraq B) Saudi Arabia C) Egypt D) Yemen
Flagship species
A. are species whose presence is tied to specific environmental conditions. B. are especially interesting and attractive and are used by conservation organizations to motivate people. C. is a term that refers to the largest species of a community.
Currently, the nominal lifetime (time that plants may operate, before they must be dismantled) allowed for fission-type nuclear reactors in the United States is
A. nuclear reactors need not be retired, because new technology developments have demonstrated that they can be fixed. B. about one hundred years. C. about forty years. D. about four years.