Mark the letter A, B, C, or D to indicate the correct answer to each of the following sentences.

Câu hỏi

Reducing the use of fresh water can help to protect marine ________.

A. ecology

B. ecosystems

C. ecologists

D. ecotourism

Đáp án
B. ecosystems

Câu hỏi thuộc Bài tập:

UNIT 10: THE ECOSYSTEM - VOCABULARY - Tiếng Anh 11 Global Success