what chemicals attack the ozone layer
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- CFCs, HCFCs, and Halon: The ozone layer is destroyed by CFC's, chlorofluorocarbons, that are used as a propellant in aerosol cans, and refrigerants in older cars and refrigerators. When Chlorofluorocarbons (Freon and other CFCs) and Bromofluorocarbons (Halons) they became popular refrigerants and fire fighting agents.
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- The ozone molecule (O3) is harmful to air quality, outside of the ozone layer. EPA regulations help states reduce ozone levels in their outdoor air. Public Hearing on EPA's Response to Clean Air Act 176A Petition from 9 States Rescheduled for April 13, 2017.
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What does the ozone layer protect us from? The ozone layer block out UV rays. These are harmful radiations of the sun.
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How does the ozone layer protect us from ultraviolet light? Ultraviolet light energy gets absorbed by the ozone layer keeping much of those harmful rays away from the organisms on Earth. However, due to the use of chemicals such as chloroflurocarbons or c.f.c.'s in aerosol spray cans and as refrigerants, a hole in the ozone layer formed and was seen back in the 1970's. This is because these chemicals reacted with the ozone and caused a hole to form in the ozone layer.
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- Under its Montreal Protocol, a global treaty passed in 1987 to phase out ozone depleting substances like chlorofluorocarbons (commonly found in spray cans and refrigerants at the time), ozone depletion has stopped.
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- The Montreal Protocol on Substances that Deplete the Ozone Layer is an international treaty designed to protect the ozone layer by phasing out the production of numerous substances that are responsible for ozone depletion.
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- Ozone is quite the double-edged sword. When found at ground level atmosphere, this gas serves as a dangerous, harmful pollutant. As a molecule in Earth's stratosphere, it protects us by absorbing harmful UV radiation from the sun that causes a variety of health problems in humans, plants, and other animals, as well as damages ecosystems. The ozone layer in the stratosphere is thin but powerful. However, because it occurs in such a low concentration, it's vulnerable to ozone-depleting chemicals, such as CFCs. CFCs are compounds that react with ozone in the presence of UV light by splitting the three oxygen atoms into one O2 molecule and one ClO molecule. The ClO molecule may react with a single oxygen atom, creating more atmospheric oxygen and a single chlorine atom, which is then free to start the cycle anew.
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- Depending on where ozone resides, it can protect or harm life on Earth. Most ozone resides in the stratosphere (a layer of the atmosphere between 10 and 40 km above us), where it acts as a shield to protect Earth's surface from the sun's harmful ultraviolet radiation.With a weakening of this shield, we would be more susceptible to skin cancer, cataracts and impaired immune systems.ombarded by the sun's ultraviolet energy, CFC molecules break up and release chlorine atoms. Free chlorine atoms then react with ozone molecules, taking one oxygen atom to form chlorine monoxide and leaving an ordinary oxygen molecule.
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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.
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- The ozone is so thin in this part of the world that the weather report on the nightly news includes five-minute sunburn alerts. Ozone is Earth's natural sunscreen. The ozone layer in the upper atmosphere, or stratosphere, absorbs harmful ultraviolet rays from the sun.In the 1980s, scientists discovered that manmade chemicals destroy ozone to the point where an actual ozone hole occurs.The good news is that this hole isn't getting any larger.he ozone is so thin in this part of the world that the weather report on the nightly news includes five-minute sunburn alerts. Ozone is Earth's natural sunscreen. The ozone layer in the upper atmosphere, or stratosphere, absorbs harmful ultraviolet rays from the sun.
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Definitions &Translations Freebase (0.00 / 0 votes) Rate this definition: sisal SISAL is a general-purpose single assignment functional programming language with strict semantics, implicit parallelism, and efficient array handling. SISAL outputs a dataflow graph in Intermediary Form 1.
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What is the chemical formula for the ozone that protects us from UV rays? The Ozone Layer The ozone layer is a layer in Earth's atmosphere which contains relatively high concentrations of ozone (O3). This layer absorbs 97-99% of the sun's high frequency ultraviolet light, which is potentially damaging to life on earth.
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- TEHRAN (FNA)- Scientists report that chemicals that are not controlled by a United Nations treaty designed to protect the Ozone Layer are contributing to ozone depletion.
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- ozone above natural levels is harmful to humans, plants, and other living systems because ozone reacts strongly to destroy or alter many biological molecules. High ozone exposure reduces crop yields and forest growth. In humans, expo-Figure Q3-1. UV protection by the ozone layer. The ozone layer resides in the strato-
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Formation of ozone Ozone molecules can also be decomposed by ultraviolet radiation into a free atom and an oxygen molecule. Ozone is thus continuously created and destroyed in the atmosphere by UV radiation coming from the sun. This highly energetic UV radiation is called UVC (wavelength 280 nm) and is very harmful for human health.
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- Ozone-depleting substances. Gases that damage the ozone layer-ozone-depleting substances (ODS) - have been used in a wide range of industrial and consumer applications, mainly in refrigerators, air conditioners and fire extinguishers.They have also been used as aerosol propellants, solvents and blowing agents for insulation foams.o protect the ozone layer the international community established the Montreal Protocol on substances that deplete the ozone layer in 1987. The European Union and its Member States are at the forefront of ozone layer protection with a policy that often goes beyond the requirements of the Montreal Protocol.
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Ozone Generators as Indoor Air Cleaners Ozone can react with other chemicals in the air to produce additional chemicals and fine particles that can also be irritating to the eyes, nose, throat and lungs. Children who breathe ozone for long periods of time (years) may suffer permanent lung damage, but this health effect is less certain.
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How does the ozone layer protect us from ultraviolet light? Ultraviolet light energy gets absorbed by the ozone layer keeping much of those harmful rays away from the organisms on Earth. However, due to the use of chemicals such as chloroflurocarbons or c.f.c.'s in aerosol spray cans... The ozone layer is located in the stratosphere several miles above the Earth's surface. Ozone is a very important atmospheric gas. As electromagnetic energy travels from the sun through space, it enters the Earth's atmosphere. One of those electromagnetic waves is called ultraviolet light.
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In what way does ozone layer protect the earth? Ozone layer acts as a shield against the ultra violet rays and protects the life on the earth. Ultra violet rays are emitted by the sun. These rays are intercepted by the ozone layer of the atmosphere before they reach the surface of the earth. Ozone layer absorbs harmful emissions from the sun and protects the life on the earth. Ozone layer is composed of ozone, a molecule made up of three oxygen atoms which are bonded together.
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- The ozone layer is the part of the upper atmosphere where ozone is found in the highest concentrations.The ozone there absorbs ultraviolet radiation, preventing most of it from reaching the ground. This is important because ultraviolet radiation can lead to skin cancer.FCs were once used widely in insulating foam and aerosol spray-cans. Once released, they gradually spread through the atmosphere, eventually reaching the ozone layer. Once there, they destroy ozone. CFCs have now been almost completely replaced by chemicals that do not cause this damage.
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What is Ozone Layer? The ozone layer forms a thick layer in stratosphere, encircling the earth, that has large amount of ozone in it. It protects our planet i.e. Earth from the harmful radiations that comes from the sun. The ozone layer was discovered in 1913 by the French physicists Charles Fabry and Henri Buisson.
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The Ozone Layer The ozone layer is the Earth's natural sunscreen, filtering out harmful ultraviolet (UV) rays from the sun. UV rays can cause damage to humans and other forms of life. Although the ozone layer is high up in the atmosphere, chemical substances used at the surface of the planet can damage it.
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Environmental Science Week 5 lead and nitrogen compounds are believed to contribute to the destruction of the ozone in the upper atmosphere false photochemical smog is considered a primary pollutant false stratospheric (high level) ozone shields the Earth from the harmful effects of ultraviolet light radiation
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- Nitric oxide is readily converted tothe much more harmful nitrogen dioxide bychemical reaction with ozone present in the at-mosphere. Nitrogen dioxide is a yellowish-or-ange to reddish-brown gas with a pungent,irritating odor, and it is a strong oxidant.
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International Actions - The Montreal Protocol on Substances that Deplete the Ozone Layer The international treaty called The Montreal Protocol on Substances that Deplete the Ozone Layer (Montreal Protocol) Exit is gradually eliminating the production and consumption of ozone depleting substances to limit their damage to the earth’s ozone layer.
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- The reactive gases formed from halogen source gases react chemically to destroy ozone in the stratosphere. The average depletion of total ozone attributed to reactive gases is smallest in the tropics and largest at high latitudes.