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    o·zone de·ple·tion

    noun

    • 1. reduction in the concentration of ozone in the ozone layer: "this chemical contributes to ozone depletion"
  2. Jun 27, 2024 · Ozone depletion, gradual thinning of Earths ozone layer caused by the release of chemical compounds containing gaseous chlorine or bromine from industry and other human activities. The thinning is most pronounced in the polar regions, especially over Antarctica.

  3. Ozone layer depletion is the thinning of the ozone layer that protects the earth from the harmful UV radiations. Explore the causes, effects, and solutions to ozone layer depletion only at BYJU'S.

  4. Jan 10, 2023 · Climate 101: Ozone Depletion The ozone layer helps to protect life from harmful ultraviolet radiation. Find out what caused the ozone hole, and how the 1989 Montreal Protocol...

  5. Ozone depletion consists of two related events observed since the late 1970s: a steady lowering of about four percent in the total amount of ozone in Earth's atmosphere, and a much larger springtime decrease in stratospheric ozone (the ozone layer) around Earth's polar regions.

  6. Mar 13, 2023 · One of the most pressing environmental problems over the last century has been the depletion of the ozone layer. But what is the ozone layer, and why does it matter? Ozone is a gas present naturally within Earth’s atmosphere. It is formed of three oxygen atoms (giving it the chemical formula O3).

  7. Sep 11, 2023 · Effects on Human Health. Ozone layer depletion increases the amount of UVB that reaches the Earth’s surface. Laboratory and epidemiological studies demonstrate that UVB causes non-melanoma skin cancer and plays a major role in malignant melanoma development.

  8. www.epa.gov › ozone-layer-protection › basic-ozone-layer-scienceBasic Ozone Layer Science | US EPA

    Oct 7, 2021 · Some compounds release chlorine or bromine when they are exposed to intense UV light in the stratosphere. These compounds contribute to ozone depletion, and are called ozone-depleting substances (ODS ODSA compound that contributes to stratospheric ozone depletion.

  9. Jan 9, 2024 · Learn about the consequences of ozone depletion and UV-B for human health and the environment. Ozone-Depleting Substances. See a list of chemicals categorized as ozone-depleting substances (ODS) under the Montreal Protocol. Current State of the Ozone Layer. Learn about the recovery of the ozone layer.

  10. www.ozonelayer.noaa.gov › science › o3depletionScience - Ozone Depletion

    Science: Ozone Depletion. In the stratosphere, the region of the atmosphere between about 6 and 30 miles (10 and 50 kilometers) above the Earth's surface, ozone (O 3) plays a vital role by absorbing harmful ultraviolet radiation from the sun.

  11. Ozone concentrations, and the ozone hole's size, are affected by sunlight, temperature, and emissions of depleting substances. This means the size of the hole can vary from year-to-year and vary across the year. The ozone hole tends to be largest in the Southern Hemisphere Spring – around October.

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