Chữa bài IELTS Task 1
updated 7 years, 9 months ago
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The graphs below show the size of the ozone hole over Antarctica and the production of three ozone-damaging gases from 1980 to 2000.
Summarise the information by selecting and reporting the main features, and make comparisons where relevant.
Write at least 150 words.
The two line graphs illustrate the size of Antarctica ozone hole and three devastating emissions which are attributable to this destruction over the 20-year period from 1980 and 2000. At the first glance, ozone layer was considerably damaged as time went by. Another visable trend is that while CFC-11 was reduced after 20 years, CFC-12 and N2O were more pervasive in 2000.
As can be seen from the first chart, Antarctica ozone hole from less than 500 thousand square kms in 1980 was enlarged doubly to one million square kms in 1984 before accelerating to nearly 2 million square kms ten years later. The only period when there was a reduction in size was in the early 1990s, which decreased to around 1.2 million square kms.
The second graph show the picture about three contributing culprits of ozone hole within the same period. While CFC-11 gradually dropped from 70 million tonnes in 1980 to just over 5 million tonnes in 2000, CFC-12 experienced a reverse trend. In 1980, the volume of CFC-12 was under 30 million tonnes (less than a half of CFC-11 at the same year); however, its quantity has slightly risen every year to approximately 45 million tonnes at the beginning of the 21st century. Meanwhile, N20 was not produced until 1990, but this kind of gas was created significantly after the 10-year period, which reached 30 million tonnes in 2000.Không sửa bài này giúp mình nhé
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