The ozone layer is a layer in Earth’s atmosphere which absorbs most of the Sun’s UV radiation. It contains relatively high concentrations of ozone (O3)‚ although it is still very small with regard to ordinary oxygen‚ and is less than ten parts per million‚ the average ozone concentration in Earth’s atmosphere being only about 0.6 parts per million. The ozone layer is mainly found in the lower portion of the stratosphere from approximately 20 to 30 kilometres (12 to 19 mi) above Earth‚ though the
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brook and some low hills on each side of the land. The home which is thought to have been built around 1880 includes a 1 and ½ story main section and an additional rear wing. The interior of Frost’s home was very simple and provided him and his family what they needed to live comfortably. In 1911‚ the farm was sold in order to pay for Frost’s family’s move to England and his eventual recognition as a poet. When Robert passed in 1963 and his legendary career as a writer‚ poet and educator was over‚ the
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OZONE LAYER The Earth ’s ozone layer protects all life from the sun ’s harmful radiation‚ but human activities have damaged this shield. Less protection from ultraviolet light will‚ over time‚ lead to higher skin cancer and cataract rates and crop damage. The ozone layer is one layer of the stratosphere‚ the second layer of the Earth’s atmosphere. The stratosphere is the mass of protective gases clinging to our planet. Ozone is only a trace gas in the atmosphere only about 3 molecules for every
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12.1 The Fossil Record 1. Form in Several Ways (The following are some of the processes that make fossils.) a. Permineralization minerals carried by water are deposited around a hard structure (may replace the hard structure) The most common fossils result from this process. A1. Natural Casts form by water removing the bone/tissue‚ leaving an impression in sediment. Minerals fill in the mold‚ recreating the original shape of the organism A2. Trace fossils record activity of an organism. Ex
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The ozone layer is a deep layer in the stratosphere‚ encircling the Earth‚ that has large amounts of ozone in it. The layer shields the entire Earth from much of the harmful ultraviolet radiation that comes from the sun. Interestingly‚ it is also this ultraviolet radiation that forms the ozone in the first place. Ozone is a special form of oxygen‚ made up of three oxygen atoms rather than the usual two oxygen atoms. It usually forms when some type of radiation or electrical discharge separates
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spray cans. In December of 1973‚ Rowland and Molina discovered that CFCs can destroy The Ozone Layer Ozone layer depletion slows There is good news about the ozone layer above us. The good news about the ozone layer is not always frequent. On International Ozone Day‚ the report came in that the ozone levels have decreased above Montreal and other residents of southern Canada. The ozone layer shields the earth from most of the harmful radiation and light coming from the sun. The ozone reflects
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The OSI model has seven layers‚ with each having different types of security responsibilities. The seven layers are application‚ presentation‚ session‚ transport‚ network‚ datalink and physical with control being passed down from layer to layer starting with application. The biggest threat to these layers is through people‚ sometimes known as the 8th layer of the OSI model. Companies should take the time to educate their employees on the security threats that each individual brings to the company
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http://www.eoearth.org/article/Fossil_fuel_power_plant Fossil fuel power plant[pic] KohlekraftwerkScholven‚ a fossil fuel power plant in Germany. (By Sebastian Schlüter - Basan1980‚ via Wikimedia Commons) [pic] A coal-fired power plant. Photo: DOE A fossil fuel power plant is a system of devices for the conversion of fossil fuel energy to mechanical work or electric energy. The main systems are the steam cycle and the gas turbine cycle. The steam cycle relies on the Rankine cycle in which
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Fossil Fuels Josh Farrar 11/16/13 The three types of fossil fuels that are used for energy provision are coal‚ oil‚ and natural gas. Fossil Fuels are the remains of once living organisms‚ but it takes centuries to form the organic matter. Coal is millions of years of decaying land vegetation (dead plants) that will form the solid fossil fuel under intense pressure. Oil is formed on the sea floor from the remains of marine microorganisms and is deposited
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and various trace gases make up the remainder. Scientists divided the atmosphere into four layers according to temperature: troposphere‚ stratosphere‚ mesosphere‚ and thermosphere. The temperature drops as we go up through the troposphere‚ but it rises as we move through the next layer‚ the stratosphere. The farther away from earth‚ the thinner the atmosphere gets. 1.TROPOSPHERE This is the layer of the atmosphere closest to the Earth’s surface‚ extending up to about 10-15 km above the Earth’s
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