Noise pollution can be harmful to wildlife in protected areas. What evidence
from the text supports this conclusion?
A The number of flights over the Grand Canyon has increased, with sound
levels in spots reaching as high as 76 decibels.
B
The noises humans make has raised the noise levels in two-thirds of
protected areas in the U.S.
С Natural sounds like birds warbling and the wind rustling in the trees can
have benefits for humans.
D Noise pollution can muffle the sound of calls among wild birds, hindering
their ability to hunt for food.