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The extinction of passenger pigeon was due to:
a. Increased number of predatory birds.
b. Overexploitation by humans.
c. Non-availability of the food.
d. Bird flu virus infection.
Answers (1)
The answer is the option (b) Overexploitation by humans.
Explanation: Passenger pigeons were native birds to North America. They became extinct due to excessive hunting.
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