Which sentence states the main idea of the passage?
A. Woolly adelgids feed on the white wool that protects them.
B. Woolly adelgids live along the creek in the national park.
C. Woolly adelgids are killing hemlock trees in the national park.
D. Woolly adelgids are becoming extinct.
1 answer
C. Woolly adelgids are killing hemlock trees in the national park.