TAILIEUCHUNG - Luyện thi IELTS (p36)

Tham khảo tài liệu 'luyện thi ielts (p36)', ngoại ngữ, toefl - ielts - toeic phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | TRANSCRIPT EPISODE 6 GREENHOUSE GASES Hello. I m Margot Politis. Welcome to Study English IELTS preparation. Today we re going to talk about the environment. Global warming is caused by the presence of greenhouses gases in the atmosphere. One of the worst greenhouses gases is carbon dioxide. We re going to look at the language of cause and effect while we find out why these greenhouses gases are a problem. The main problem is our use of fossil fuels. So what we ve done is put the whole natural system out of balance by digging up coal and oil that took about 200 million years to accumulate and we re releasing it all in about 100 years. So it s put the whole system out of balance at the moment which has resulted in higher levels of these gases in the atmosphere. That was Dr Roger Francey talking about the natural system. He says that the natural system is out of balance . He also talked about the causes and effects of this. Listen for the main cause of the natural system being out of balance. The main problem is our use of fossil fuels. He says the main problem is our use of fossil fuels . So if we look at a table of cause and effect we can say that the use of fossil fuels is a cause and the natural system out of balance is an effect. Listen again. The main problem is our use of fossil fuels. So what we ve done is put the whole natural system out of balance by digging up coal and oil that took about 200 million years to accumulate and we re releasing it all in about 100 years. So the natural system has been put out of balance by people digging up and burning coal and oil. This releases gases into the atmosphere. Coal and oil are fossil fuels. So if we go back to the table of cause and effect we can say that digging up and burning coal and oil is another cause. o - INSEARCH 0 ậ TECHNOLOGY SYDNEY Page 1 of 5 See if you can hear another effect. The main problem is our use of fossil fuels. So what we ve done is put the whole natural system out of balance by digging up .

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