Answer:
Increase decrease
Explanation :
I think that the Elks population grew since there isn't any more predator to eat them. So the aspen trees population would drop since there would be more Elks to eat them.
Answer: Decrease, Increase
Explanation: Wolves eat Elk which causes a decrease in Elk. A decrease in Elk causes an increase in tree/shrub because Elk eat shrubs.
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