Multiple Choice
Which of the following statements about wolves in Yellowstone National Park is true?
A) They are the only predators of moose and elk.
B) Their disappearance led directly to the severe reduction of young aspen trees.
C) Their disappearance led indirectly to the severe reduction of young aspen trees.
D) Both a and b
E) Both a and c
Correct Answer:

Verified
Correct Answer:
Verified
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