1. SPEAKING Look at the photo above. Which natural phenomenon is it? What happens if the greenhouse gases keep increasing? 2. What greenhouse gases are produced through human activities? Match column A with column B to have an answer. 3. VOCABULARY Check the meaning of the following words or phrases. Which is not related to global warming? 4. Read paragraph A of the text. Which of the ideas in exercise 3 are mentioned in the reading? 5. Read the text. Find the details related to the following nu
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