Ozone depletion facts and information - National Geographic.

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.

The ozone layer is a layer of ozone high up in the Earth's atmosphere stratosphere, between approximately 10 kilometres and 50 kilometres above Earth’s surface.The exact amount of ozone varies, depending on the seasons and the location. This layer absorbs between 93 and 99 per cent of the ultraviolet radiation from the sun. This radiation is dangerous to living organisms on Earth.

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The ozone layer sits between the Sun and us. Without the Sun's warmth, it would be too cold to live on Earth, but the Sun also gives off harmful ultraviolet rays, or UV rays for short.These rays.The ozone layer is a thin covering of ozone in the stratosphere. It protects the surface from the sun's UV radiation. Ozone deterioration occurs when halogen ions from CFCs interact with ozone and turn it into molecular oxygen. The result is an ozone hole that appears over the poles every year.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 (the ozone layer), and a much larger springtime decrease in stratospheric ozone around Earth's polar regions. The latter phenomenon is referred to as the ozone hole.There are also springtime polar tropospheric ozone depletion.


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Ozone Layer Protection Essay. 964 Words 4 Pages. Show More. Case Study of Environmental Conservation of Ozone in Hong Kong The ozone layer present in the stratosphere of the Earth is utmost important to us as it protects us from the exposure of ultraviolet rays which leads to several harmful effects. Without the ozone layer, human will be more prone to skin cancer and eye cataracts.

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Build an Ozone Depletion Model Activity - Using gumdrops and toothpicks, students conduct a large-group, interactive ozone depletion model. Students explore the dynamic and competing upper atmospheric roles of the protective ozone layer, the sun's UV radiation and harmful human-made CFCs (chlorofluorocarbons).

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Reasons for the ozone hole. The ozone hole has developed because people have polluted the atmosphere with chemicals containing chlorine and bromine. The primary chemicals involved are chlorofluorocarbons (CFCs for short), halons, and carbon tetrachloride. CFCs in particular have been used for a wide range of applications, including.

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Mar 13, 2015 - given the spirit of individuals. See more ideas about Ozone depletion, Ozone layer and Climate change.

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The ozone layer or ozone shield is a region of Earth's stratosphere that absorbs most of the Sun's ultraviolet radiation. It contains high concentration of ozone (O 3) in relation to other parts of the atmosphere, although still small in relation to other gases in the stratosphere.The ozone layer contains less than 10 parts per million of ozone, while the average ozone concentration in Earth's.

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I need help writing a essay E Series 15 Funding of the last custom essay writing service reviews category require care emergency, non-urgent, scheduled in 2010 was an average of 17. For general instructions on how to apply for financial aid, please visit the Office of Undergraduate Financial Aid website.

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Pollution happens when the environment is contaminated, or dirtied, by waste, chemicals, and other harmful substances. There are three main forms of pollution: air, water, and land.

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The greenhouse effect is a warming of Earth’s surface and the air above it. It is caused by gases in the air that trap energy from the sun. These heat-trapping gases are called greenhouse gases. The most common greenhouse gases are water vapor, carbon dioxide, and methane. Without the greenhouse effect, Earth would be too cold for life to exist.

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The Earth's ozone layer ozone layerThe region of the stratosphere containing the bulk of atmospheric ozone. The ozone layer lies approximately 15-40 kilometers (10-25 miles) above the Earth's surface, in the stratosphere. Depletion of this layer by ozone depleting substances (ODS) will lead to higher UVB levels, which in turn will cause increased skin cancers and cataracts and potential damage.

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Ozone layer definition is - an atmospheric layer at heights of about 20 to 30 miles (32 to 48 kilometers) that is normally characterized by high ozone content which blocks most solar ultraviolet radiation from entry into the lower atmosphere.

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