Land becomes desert after all trees are cut down because _________.
B. there are no larger trees to keep rain and protect the topsoil
Đáp án B
Đất trở thành sa mạc sau khi tất cả cây cối bị chặt hạ vì _______The underlined word “prevailing” in the second paragraph is closet in meaning to _______.
According to the passage, most ocean water evaporation occurs especially __________.
The passage mentions that the tropics differ from the Earth’s polar regions on which of the following ways?
The word “fault” in paragraph 1 is closest in meaning to _______.
The underlined word “it” in the first paragraph refers to _______________.