The World Health Organization was established in 1948 as a.
Unfortunately, CFCs can eventually find their way into the Earth's atmosphere and the ozone layer. Once they get there they destroy ozone molecules and cause the ozone layer to become depleted or thinner. CFCs Get Banned In 1974 scientists Sherry Rowland and Mario Molina discovered the link between the depletion of the ozone layer and CFCs.
The most severe case of ozone depletion was first documented in 1985 in a paper by British Antarctic Survey (BAS) scientists Joseph C. Farman, Brian G. Gardiner, and Jonathan D. Shanklin. Beginning in the late 1970s, a large and rapid decrease in total ozone, often by more than 60 percent relative to the global average, has been observed in the springtime (September to November) over Antarctica.
Ozone depletion describes two distinct but related phenomena observed since the late 1970s: (1) a steady decline in the total amount of ozone in earth’s stratosphere (i.e., the ozone layer), and (2) a much larger springtime decrease in stratospheric ozone around earth’s polar regions. The latter phenomenon is referred to as the ozone hole.
Aug 8, 2018 - Causes and Effects of Ozone depletion - Ozone hole. Aug 8, 2018 - Causes and Effects of Ozone depletion - Ozone hole. Stay safe and healthy.. Here are 10 Tips to protect kids from air pollution of all kinds. What others are saying. Writing Discursive compositions (Secondary level) (Part 4): Introduction of Discursive essays.
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The AstraZeneca pharmaceutical company has also increase their sustainable development in environment factors, such as, the utilization of more resources, climate changes, re-cycling activities of its energies, paying reliable taxes to the government, ozone depletion, re-cycling of waste water etc.
The ozone layer acts as a natural filter, absorbing most of the sun's burning ultraviolet (UV) rays.Stratospheric ozone depletion leads to an increase in UV-B that reach the earth's surface, where it can disrupt biological processes and damage a number of materials. The fact that UV-B can cause biological effects is well demonstrated by the familiar sunburn that follows overexposure to the sun.