WHY IS “ PLANKTON” MENTIONED IN LINE 15

Tiếng Anh Đề thi thử THPT Quốc gia năm 2016 môn Tiếng Anh trường THPT Hồng Lĩnh, Hà Tĩnh

49. Why is “ plankton” mentioned in line 15?

A. To demonstrate the interdependence of different species

B. To emphasize the importance of food resources in preventing mass extinction.

C. To illustrate a comparison between organisms that live on the land and those that live in the

ocean

D. To point out that certain species could never become extinct.