Band 6+: 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.

The line graphs show the size of the ozone hole over Antarctica and the generation of three ozone-damaging gases over two decades, starting from 1980.

Overall, it is clear that while the generation of CFC-12 and N20 surged, CFC-11 witnessed an opposite trend. Furthermore, the ozone hole expanded during this period.

On the one hand, between 1980 and 1990, the amount of CFC-11 stood at approximately 70 tones in 1980, which was higher than the 30 tones of CFC-12. In Addition, the ozone hole size started at under 500 Square kilometers. While the ozone hole size rose gradually and reached around 2,000, by 1990, the B gas had surpassed the A gas at around 40 tones.

On the other hand, from 1990 to 2000, the size of the ozone hole and the B gas surged, whereas the A continued its reducing trend. Furthermore, the generation of the C gas started in 1990 and ended at around 35 tones in 2000. The production of B gas finished at approximately 50 tones, which was more than the 5 tones of the A gas; meanwhile, the expansion of the ozone hole finished at around 4,000.