London: Countries of the world have started to see results when they unite; The UN says the ozone layer is starting to shrink. Informed. In 2000, crack was 2.91 square kilometers. This has shrunk to 2.31 crore square kilometres. According to the UN report, crack will be completely shut down by 2040 if this continues.
The ozone layer is cracked over Antarctica. The ozone layer protects living organisms from harmful ultraviolet rays. Scientists have warned that reducing the protective shield will make diseases such as cancer more prevalent. The achievement so far will save 20 lakh people from skin cancer every year, according to the United Nations. Environmental project director Inker Andersen announced.
Since the 1970s, the ozone layer over Antarctica has been depleting. It was established in 1985. 1987 Ban on chemicals that deplete the ozone layer. Chlorofluorocarbons (CFC-11), a chemical found in air conditioning, refrigerators and foam insulation, play an important role in depleting the ozone layer. With this CFC 46 countries sign the Montreal Protocol to reduce emissions. However, after 2018, CFC-11 emissions decreased significantly.
The chlorine molecules in CFCs break down the ozone molecules causing the depletion of the ozone layer. It has also been found that the amount of chlorine in the atmosphere has started to decrease. Levels of ozone-depleting bromine have decreased by 14.5% since 1993. The ozone layer was expected to reach normal levels by 2066, when the CFC-11 regulation was introduced.
