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Câu hỏi:
Which of the following could be considered a cause of the distress signals of trees?
- A. attacks by insects
- B. experiments by scientists
- C. torn roots
- D. lack of water
Lời giải tham khảo:
Đáp án đúng: D
Dẫn chứng:
Researchers are now running tests with potted trees that have been deprived of water to see if the sound is what attracts the insects. “Water-stressed trees also smell differently from other trees, and they experience thermal changes, so insects could be responding to something other than sound”, one scientist said.
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