Many forms of cancer are difficult to prevent. If you are diagnosed with them‚ it is just your bad luck. This is not the case with skin cancer. The skin performs a very important purpose. It protects the body against heat‚ radiation and infection. The skin also regulates your temperature and produces vitamin D. To the surprise of many‚ the skin is considered an organ. In fact‚ it is the largest organ you have. The skin is surprisingly tough given its thinness. That being said‚ it can be damaged
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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. Ultraviolet rays can also cause harm to marine life by reducing the amount of planktons and consequently depreciates the amount of fishes in the ocean. Besides that‚ the depletion of the
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the breast or some kind of mishape on the nipple or breast. Melanoma was another type of cancer that was very common that affected the human’s skin. The Atomic Bomb caused lots of ultraviolet radiation to be exposed to lots of humans. Ultraviolet radiation causes skin to get different mutations that happens when DNA is damaged which then makes cells to be created in fast amounts that then creates a tumor
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with longer wavelengths and the ultraviolet‚ with shorter wavelengths.[2][3] These numbers do not represent the absolute limits of human vision‚ but the approximate range within which most people can see reasonably well under most circumstances. Various sources define visible light as narrowly as 420 to 680[4][5] to as broadly as 380 to 800 nm.[6][7] Under ideal laboratory conditions‚ people can see infrared up to at least 1050 nm‚[8] children and young adults ultraviolet down to about 310 to 313 nm
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pollution include the greenhouse gases and the hole in the ozone layer in the stratosphere. The Earth’s ozone layer is supposed to protect people from the Sun’s harmful ultraviolet rays‚ but in the 1970s‚ scientists found out that some chemicals let out into the atmosphere makes the ozone turn into oxygen‚ which means that more ultraviolet rays reach the Earth. During the 1980s‚ scientists found that the ozone layer above the South Pole had thinned by 50 to 98 percent. Human health[change | edit source]
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in many parts of the world‚ resulting in the submersion of the low-lying coastal towns and cities. Ozone Depletion Ozone Layer is formed when ultraviolet radiation (UV) splits a molecule of oxygen (O₂)‚ and the free oxygen atoms (O) combine with other oxygen molecules. Ozone acts as a filter in the upper atmosphere‚ preventing the harmful ultraviolet radiation of the sun from reaching the earth. Carbon compounds such as carbon dioxide (CO₂) and chlorofluorocarbons (CFCs)‚ nitrogen oxides (NO)
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Atmosphere Homework Describe the composition of the air Air is a mixture of gases and aerosols that compose the atmosphere surrounding Earth. The primary gases of air include nitrogen (78%) and oxygen (21%). Trace gases and aerosols make up the remaining 1% of air. The trace gases include the noble gases argon‚ neon‚ helium‚ krypton and xenon‚ hydrogen and the greenhouse gases. The aerosols are solid or liquid particles having diameters in the region of 0.001 to 10 microns‚ and include dust
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region in a spectrum the chromophore will absorb. Lengthening or extending a conjugated system with more unsaturated (multiple) bonds in a molecule will tend to shift absorption to longer wavelengths. Woodward-Fieser rules can be used to approximate ultraviolet-visible maximum absorption wavelength in organic compounds with conjugated pi-bond systems. [edit]Metal complex chromophores The metal complex chromophores arise from the splitting of d-orbitals by binding of a transition metal to ligands. Examples
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need that a person who welds should wear a helmet to protect himself from the fire sparks. The headgear protects the welder’s eyes‚ face and neck from flash burn‚ ultraviolet light‚ sparks‚ heat and infrared light. It will prevent from retina burns which lead to loss of vision. In order to avoid this unprotected exposure to the ultraviolet and infrared rays it is necessary to make use of the right helmet which safeguards the body. Arc welders are supposed to wear the right type of helmet to safeguard
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the form of acid rain. Acid rain can cause great damage to human‚ animals and crops. 4. Depletion of Ozone layer: Air pollution depletes Ozone layer. Ozone exists in earth’s stratosphere and is responsible for protecting humans from harmful ultraviolet (UV) rays. Earth’s ozone layer is depleting due to the presence of chlorofluorocarbons‚ hydro chlorofluorocarbons in the atmosphere. As ozone layer will go thin‚ it will emit harmful rays back on earth and can cause skin and eye related problems
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