Until Yellowstone's devastating fire season of 1988, which of the following was the park's official policy?
A) allow human- caused fires to burn
B) allow wildfires to burn
C) don't allow any fires to burn
D) allow all fires to burn
E) start fires on purpose
Correct Answer:
Verified
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Q39: The energy source for the biosphere is
A)
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A) oxygen
B)
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