What was the primary reason that the beaver and songbird populations were also diminished from the area?
A) The wolf population was feeding on the beaver and songbirds.
B) The rivers were full of sediment, making it difficult for beaver to swim and songbirds to drink water.
C) The elk population was feeding on the beaver and songbirds.
D) The temperatures in the area were warming, making it difficult for the beavers and songbirds to survive in warmer weather.
E) The plants that the beaver and songbirds ate were diminishing, because of the elk's increased herbivore pressure.
E
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An event that occurs at predictable intervals is described as a(n) _______________ event.?
Fill in the blank with correct word.
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Indicate whether the statement is true or false