Question

which of the following is the biggest threat to the monarch butterflies annual migration?
a. illegal logging c. airplanes
b. cold winters d. new predators
please select the best answer from the choices provided
a
b
c
d

Explanation:

Illegal logging destroys the overwintering habitat (such as oyamel fir forests in Mexico) of Monarch butterflies. Cold winters are a natural part of their migration cycle and they have adapted to some degree. Airplanes rarely pose a significant threat to their large - scale migration. New predators are not as major a threat as habitat destruction caused by illegal logging.

Answer:

A. illegal logging