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BEST IELTS Task 1 Academic Writing, 9th October
ACADEMIC WRITING TASK 1
ACADEMIC WRITING TASK 1
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.
SAMPLE ANSWER
The two line graphs illustrate how the ozone hole over Antarctica changed its size and the amount of three different harmful gases between 1980 and 2000.
Overall, the ozone hole had been enlarging from 1980 to 2000 because of the significant growth of CFC-12 and N20 gases over the period.
Statistically, in 1980 the size of the ozone hole was under 400 thousand square km. During the 1980-2000 periods, it has been widening, and experienced the largest square in 2000, at 3,600 thousand square km, except for a slight drop by almost 1000 thousand square km from 1990 to early 1992.
In 1980, while under 70 million tonnes of CFC-11 was generated; which was over twice than that of CFC-12, the amount of CFC-12 outnumbered the figure of CFC-11, at over 40 million tones and approximately 35 million tonnes respectively.
After 1990, the other damaging gas called N20 was produced. While CFC12 gas displayed the largest quantity in 2000, at about 50 million tonnes, there was a considerable increase in the figure of the newly-introduced gas, reaching the point at over 35 million tonnes. In contrast, CFC-11 gas experienced the smallest figure, at 5 million tones only.
