Moose first arrived on Isle Royale in the early 1900s. The moose population of Isle Royale has fluctuated over the years. Since 1980, the population has been as low as 500 animals and as high as 2,400. The only predator on the island to moose is the gray wolf. Consider the data. What is the most likely cause of the population change in 1990?
Responses
A The hunting season for wolves was eliminated.The hunting season for wolves was eliminated.
B Climate change caused a longer summer season.Climate change caused a longer summer season.
C There was an extensive forest fire in the area.There was an extensive forest fire in the area.
D A large number of moose led to over-browsing of island vegetation causing winter starvation.