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The Size of a Bird Population Increased by Two Percent

Question 45

Multiple Choice

The size of a bird population increased by two percent in one year. Which of the following could have contributed to the population increase?


A) a decrease in the death rate of baby birds
B) an increase in the number of the birds' predators
C) an increase in the average number of parasites per bird
D) a decrease in the immigration of birds of the same species

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