This is honestly just 7th grade science. Can anyone help me?

Answer:
All the Pine trees have been killed off
Explanation:
It would take a while for the beetles to find a new are. (Brainliest??)
Answer:
until all of the pine trees have been killed off
Explanation:
if the pine trees are what the beetles eat, and there is no more in the area, they will not have food, and therefore die of starvation.