causes of ozone pollution
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- The Causes of Ozone Depletion. Scientific evidence indicates that stratospheric ozone is being destroyed by a group of manufactured chemicals, containing chlorine and/or bromine. These chemicals are called ozone-depleting substances (ODS).
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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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- On average, 1 pound of spinach contains 6 cups of leaves. This is a common ratio in the cuisine culture. Also the same question is located here: http://wiki.answers.com/Q/H … ow_many_cups_of_spinach_are_in_a_pound_of_spinach Old answer: 16 oz is a pound. One doesn't measure spinach or greens in 'cups'.
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Air Pollution and Ozone Depletion - solar energy powers a reaction that converts molecular oxygen to ozone. - 90% of Earth's ozone is found in stratosphere. - small amounts are found at ground level as an air pollutant caused by photochemical smog.
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- While photochemical smog and high concentrations of ozone pollution are most often associated with urban centers, more diffuse, regional ozone pollution episodes have been found to extend over thousands of miles and encompass agricultural as well as urban areas.
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- Bad Ozone is also known as Tropospheric Ozone, or ground level ozone. This gas is found in the troposphere, the layer that forms the immediate atmosphere. Bad Ozone does not exist naturally. Human actions cause chemical reactions between oxides of nitrogen (NOx) and volatile organic compounds (VOC).
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What is the Ozone Hole? Ozone is made up of oxygen and is produced naturally in the atmosphere. As the presence of ozone gets reduced in the atmosphere, it causes the ozone layer to get thinner and thinner. The more ozone layer gets thin, the more big gets the size of ozone hole.t was noticed that there was a steady decline of the ozone in the stratosphere, which comprised of the ozone layer. They also noticed ozone depletion in larger amounts over the two poles of the earth, which is known as the ozone hole.
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- Power Plants and other industrial waste increases the amount of Ground-Level Ozone Ozone is a gas that is composed of three oxygen atoms (O 3). It is created by the oxides in the air’s nitrogen reaction with volatile organic compounds (VOC). Normally we think of ozone being higher in the atmosphere, also known as “good” ozone. However, when the conditions are right, ozone can occur at ground level, which is known as “bad” ozone. Sunlight and hot weather cause “bad” ozone in harmful concentrations. Thus in the summertime, urban areas have to be concerned about the amount of “bad” ozone.
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What is the Ozone Hole? Causes of Ozone Hole. The destruction of ozone layer is caused by one factor only which is Cholorofluorocarbons. The main cause of the ozone hole was found to be gases that contained Cholorofluorocarbons (CFCs), Halons and Freons.Found commonly in aerosol cans and released by many electronic appliances, these were seen to decrease the level of ozone in the stratosphere.t was noticed that there was a steady decline of the ozone in the stratosphere, which comprised of the ozone layer. They also noticed ozone depletion in larger amounts over the two poles of the earth, which is known as the ozone hole. A layer of gas called ozone sits up around 25-30 kms above the earth’s surface.
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Ozone Pollution Ground level or bad ozone is not emitted directly into the air, but is created by chemical reactions between oxides of nitrogen (NOx) and volatile organic compounds (VOC) in the presence of sunlight.round level or bad ozone is not emitted directly into the air, but is created by chemical reactions between oxides of nitrogen (NOx) and volatile organic compounds (VOC) in the presence of sunlight.
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Air Pollution Ozone High up in the atmosphere, ozone forms a layer that shields the Earth from ultraviolet rays. However, at ground level, ozone is considered a major air pollutant. Ground-level ozone– the focus of this study – is formed from other pollutants and can react with other substances, in both cases under the action of light.
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Direct exposure to algae Air pollution Airborne nitrogen compounds like nitrogen oxides contribute to the formation of other air pollutants such as ground-level ozone, a component of smog which can restrict visibility. Wind and weather can carry ozone many miles from urban to rural areas.
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Factories' Pollution & Other Causes of Global Warming Not only does it add to global warming, ground-level ozone is detrimental to human health by causing or worsening respiratory problems. In addition, it negatively impacts ecosystems by damaging vegetation. Each year, ozone causes $500 million worth of reduced crops, according to the U.S. Environmental Protection Agency.
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Ozone pollution - Definition and causes We also need to know that ozone is not always bad, and the ozone that is responsible for ozone pollution is ozone at ground level, while there is also so called good ozone in the upper Earth's atmosphere that protects us from harmful UV radiation.
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- It's a seeming paradox, but not a real one. When it comes to ozone the where makes the difference. Near the ground, ozone is an air pollutant from man-made emissions. Ten to 30 miles overhead, ozone forms a protective layer that filters dangerous ultraviolet radiation from sunlight.hen it comes to ozone the where makes the difference. Near the ground, ozone is an air pollutant from man-made emissions. Ten to 30 miles overhead, ozone forms a protective layer that filters dangerous ultraviolet radiation from sunlight.
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Smog - Who does it hurt? Bad Ozone-In the Earth s lower atmosphere, near ground level, ozone is formed when pollutants emitted by cars, power plants, industrial boilers, refineries, chemical plants, and other sources react chemically in the presence of sunlight. Ozone at ground level is a harmful pollutant.
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- Ozone levels above a minimum concentration can cause pollution and harmful health effects. Ozone is created when volatile organic compounds (VOCs) react with oxygen in the atmosphere. The electrical energy in lightning can create ozone from oxygen molecules. The Earth's ozone layer was significantly reduced by CFCs, found in aerosol spray cans and other products.
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- 1. Ozone depletion is the thinning of the earth’s ozone layer, which is responsible for keeping most of the sun’s ultraviolet radiation. This is caused by the presence of other greenhouse gasses in the atmosphere, and although naturally occurring, the rate of depletion is too fast for nature to cope up with.
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Air Pollution Linked to U.S. Birth Defects We need answers, he says. The study found that high levels of carbon monoxide and ozone were linked to birth defects. Whether it is these contaminants -- or something else in the air -- remains unknown.
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What are the effects of ozone depletion? As explained above, the primary cause of ozone depletion is the presence of chlorine-containing source gases (primarily CFCs and related halocarbons). In the presence of UV light, these gases dissociate, releasing chlorine atoms, which then go on to catalyze ozone destruction.ost of the ozone that is destroyed is in the lower stratosphere, in contrast to the much smaller ozone depletion through homogeneous gas phase reactions, which occurs primarily in the upper stratosphere.
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- Chlorofluorocarbons and ozone. Many people have heard that the ozone hole is caused by chemicals called CFCs, short for chlorofluorocarbons. CFCs escape into the atmosphere from refrigeration and propellant devices and processes. In the lower atmosphere, they are so stable that they persist for years, even decades.he ozone hole is the region over Antarctica with total ozone of 220 Dobson Units or lower. This map shows the ozone hole on October 4, 2004.
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Unit 11: Atmospheric Pollution // Section 4: Secondary Air Pollutants Since OH affects the rates at which some pollutants are formed and others are destroyed, changes in OH levels over the long term would have serious implications for air quality. Ground-level ozone (O 3) is a pernicious secondary air pollutant, toxic to both humans and vegetation (Fig. 5). It is formed in surface air (and more generally in the troposphere) by oxidation of VOCs and carbon monoxide in the presence of NO x.
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Ozone Pollution Ozone Pollution. Ground level or bad ozone is not emitted directly into the air, but is created by chemical reactions between oxides of nitrogen (NOx) and volatile organic compounds (VOC) in the presence of sunlight.
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Caffeine Overdose Moderate Symptoms. Most people need to really overdo it with the au laits to get to this point, but some people who are particularly sensitive to caffeine might get these symptoms from a couple of regular cups of jo. One of the most disturbing symptoms at this stage is a racing heart.
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- Introduction. Man-made CFCs are the main cause of stratospheric ozone depletion. CFCs have a lifetime of about 20 to 100 years, and consequently one free chlorine atom from a CFC molecule can do a lot of damage, destroying ozone molecules for a long time.
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- • Ozone is an important air pollutant in the troposphereOzone is an important air pollutant in the troposphere produced in summer smog and also a very efficient greenhouse gas (especially in tropopause region).