The changes that occurred to the population of the deer and wolf between 1971 and 1980 was that the deer population decreased because of the increase in the number of wolves.
- From the complete question, the wolf population was 10 in 1971 but had gotten to 19 in 1980. On the other hand, the population of deer has decreased by 1980.
- It should be noted that wolves are the predators of deers and therefore the wolves kill and eat the deers. In this case, as the number of wolves increases, they'll target the deers and kill them. This will then lead to a reduction in the population of the deers.
- In this case, an increase in the population of the wolves will lead to a reduction in the population of the deers. On the other hand, assuming there was a reduction in the population of the wolves, this will have resulted in an increase in the population of deer.
In conclusion, the population of the deers reduced.
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