What radioactive material is the main fuel used to produce nuclear energy?
A) Uranium-238
B) Uranium-235
C) Lead-207
D) Thorium-232
Answer: B
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What organization was created by the Boundary Waters Treaty of 1909 and regulates cross-boundary issues involving water resources, transportation, and environmental policy between the U.S. and Canada?
A) United Nations (UN) B) Canada-U.S. Boundary Waters Union C) International Joint Commission D) North American Treaty Organization (NATO) E) North American Free Trade Agreement
The origin of cP and cA air masses that enter the United States is northern Siberia
a. true b. false
Compared to forests that are managed using sustainable forest management, commercial forests managed for maximum sustainable yield of commercially valuable species will
A) support more biological diversity. B) be more resistant to pests. C) produce a greater variety of wood. D) have greater erosion problems.
Glacial sediments are more uniform in size than stream sediments
Indicate whether the statement is true or false