(As shown in picture e) we have a clear passageway for air, from outside into our mouth, to our pharynx, trachea, bronchi, bronchioles, and the alveoli. We have to get the air into our alveoli, because that is where all gas exchange with oxygen and carbon dioxide will occur. ... When we breathe air passes through the larynx and the trachea. ... Capillaries are small blood vessels with thin walls, are wrapped around this alveoli. ... As the diaphragm contacts oxygen is pulled into the lungs. ...

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The immense amounts of sulphur dioxide emitted into the air causes high levels of acid in the atmosphere. When this sulphuric acid is absorbed into moisture in the air, poignant rainfalls can be damaging to the external environment. ... The sulphur dioxide, which diffuses into the air, mixes with moisture causing the pH levels to drop from the normal level. ... An inordinate amount of sulphur dioxide is let into the air, more than can be neutralized by nutrients in the air. ... The acid rain corrodes the thin, waxy layer, which coats and protects the leaves letting the acid suffocate the leave...

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The immense amounts of sulphur dioxide emitted into the air causes high levels of acid in the atmosphere. When this sulphuric acid is absorbed into moisture in the air, poignant rainfalls can be damaging to the external environment. ... Sulphur dioxide diffuses into the air and mixes with moisture causing the pH levels to drop from the normal level. ... An inordinate amount of sulphur dioxide is let into the air, more than can be neutralized by natural nutrients. ... The acid rain corrodes the thin, waxy layer, which coats and protects the leaves which in turn blocks the absorption of carbon...

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Since CFCs are heavier than air, the process of CFCs reaching the ozone will generally take from two to five years to get into the stratosphere. ... The CFCs inside auto and home air conditioning systems, as well as in refrigerators can leak out, and eventually will rise into the atmosphere destroying the ozone layer. ... Man-made chemicals are not the only way ozone depletion can occur; natural depletion is also a reason the ozone layer is thinning. ... The thinning of the ozone layer that protects us from ultraviolet radiation is increasing and ramifications will have numerous worldwide effe...

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However, the southern hemisphere's thinning ozone layer does not endanger very many densely populated areas. ... Their increased energy damages any living cells they come into contact with (Makhijani, 108). ... Technically speaking, ozone - as with any other chemical substance - is not "destroyed,"" it is merely transformed into some other chemical compound. ... They decompose into chemicals that are highly reactive with ozone: chlorine and bromine (from halon). ... Ultraviolet Reflections: Life Under a Thinning Ozone Layer. ...

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For example, the north polar cap in the last decade has thinned 2%. ... The pictures brought back by astronauts show the atmosphere as a very thin translucent blanket covering the planet. ... This sounds incredibly small when we consider the amount of material that is pumped into the air daily. ... This is due to the great amounts of carbon monoxide being pumped into the air. ... This means that the explosion of population plus the industrialization process has increased greatly the amount of CO2 pumped into the air. ...

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The question about the destruction of the ozone layer revolves around whether human-made CFCs (chlorofluorocarbons) used in air-conditioners and refrigerators are breaking it down. This is the ozone thinning theory: "CFCs release chlorine into the stratosphere... leading to ozone destruction and exposing the planet to harmful ultraviolet rays (Cagin 6)." Critics who discount the thinning theory still say that chlorine comes from natural sources like volcanic eruptions and does not cause permanent damage (Cagin 6). ... Scientists have now found that the, "Earth's protective ozone sh...

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Ozone Layer Depletion Imagine a world with bad air, polluted water, starvation, increased cancer conditions and even limited land. ... The Earth's atmosphere is divided into several layers. ... Out of each 10 million air molecules, about 2 million are normal oxygen, but only 3 are ozone. ... When the ozone layer begins to thin, it lets more UV rays enter our atmosphere. ... The ozone layer is thinning; and the thinner it gets the more that future will continue to haunt us. ...

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Primary pollutants are emitted directly into the atmosphere from sources such as power plants, automobiles, factories, and even residential furnaces. ... This prompted extensive research into why this might be happening. Red Spruce live at high elevations and are capable of surviving in thin, rocky soil with an already high acidity. ... And 3) On a stand or regional basis, what is the dynamic relationship between air pollutants and forest damage. ... The next step was the introduction of The Clean Air Act. ...

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In fact, atmospheric gases are often divided up into the major, constant components and the highly variable components, as shown in Table 1 and Table 2. ... Scientists divided the atmosphere into four layers according to temperature: troposphere, stratosphere, mesosphere, and thermosphere. ... THE OZONE LAYER The stratosphere contains a thin layer of ozone molecules (with three oxygen atoms) which forms a protective layer shielding life on Earth from the Sun's harmful ultraviolet radiation. ... Some gases in the exosphere actually escape into space. Particles of the solar winds are conc...

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This cancer can grow into large tumors and can also be spread throughout the body. ... They both can lead into Squamous cell carcinoma. ... CFC's were mainly used for coolants like air conditioners and refrigerators, but they were also used as aerosols, and other propellants. ... The atmosphere above the South begins to thin greatly during the Antarctic winter months. ... The ozone depletion becomes so thin that a hole appears to form on certain scientific instruments. ...

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In the air, sulfur dioxide and nitrogen oxides can be transformed into sulfuric acid and nitric acid. The air current can send these gases thousands of kilometers from the source. ... Acids rain no longer single out the lakes, forest, and thin soils of the Northeast. ... Presently, the United States annually discharges more than twenty million tons of suffer dioxide into the air (Lovrich, et al 1992). ... The United States currently pumps some 23 million tons of nitrogen oxides into the atmosphere in the course of the year. ...

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Another important fact is that trees, through photosynthesis, clean the earth's carbon dioxide and release oxygen into the atmosphere. ... Fossil fuels emit another 5.8 billion metric tons of CO2 into the air each ear, while the burning of tropical rainforests emits roughly 1.8 billion metric tons of CO2 - both contributing to a buildup of carbon dioxide that will soon trigger the greenhouse effect." ... Picture the environment as a machine, and imagine our wildlife as a cog in the machine, disturbing one aspect of nature will send it into discord. ... The change of the earths temperature...

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The pain a patient receives after the surgery was put into a scale called the Lysholm scale. ... Helium-4 can change from a gas to a liquid to a super fluid, and when put in a container, forms a thin film on the surface. Oxygen can be produced from air that can be used in rocket engines, for cutting and welding torches, for supporting life in space and deep-sea vehicles, and for blast furnace operations. Nitrogen can also be produced from air for the making of ammonia for fertilizers, to prepare frozen foods, and to ship frozen foods. ...

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• Trees turn carbon dioxide into oxygen that helps us breathe and reduces air pollution. • Trees also filter lots of other chemicals from our air and purify it making the air healthier for us to breathe. ... • They also clean the air by stopping a lot of flying dust particles etc from flying. ... Trees are the essential link in the food chain of life; they capture sunlight and convert it into energy. ... As plants turn sunlight into sugars, through the process of photosynthesis, they use up water. ...

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