Since the 1990s, _________________ have killed an estimated 30 billion conifers in the western United States.
A)invasive fungi
B)ladybird beetles
C)pine shoot beetles
D)bark beetles
E)foresters

Question

Quizplus · Accepted Answer

Bark beetles have been responsible for killing an estimated 30 billion conifers in the western United States since the 1990s due to their infestations and the resulting tree mortality.

Since the 1990s, _________________ Have Killed an Estimated 30 Billion