Question

Which of the following contributed to the range expansion of the mountain pine beetle?

a. greater snowfall in winter.
b. ability to adapt to exploit different hosts.
c. increased population densities
d. all of the above.
e. b and c f. a and c

Answer 1

The range expansion of the mountain pine beetle is due to its adaptability to different hosts and increased beetle populations, not greater snowfall.

Step-by-step explanation:

The factors that contributed to the range expansion of the mountain pine beetle include its ability to adapt to exploit different hosts and increased population densities. Greater snowfall in winter does not contribute to their range expansion; instead, milder winters have aided their survival. Therefore, the correct answer to which factors contributed to the range expansion of the mountain pine beetle is e. b and c.