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The effects of radiation essay
Ozone depletion conclusion
Impact of global warming on the environment
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Ozone Layer Depletion
In the 21st century, some major issues have emerged along with the advancement of science and technology, ozone layer depletion is one of them. Ozone layer depletion has become a worldwide concern due to the rapid deterioration of the volume of the ozone layer, also for the increasing threat to all living organism and their functions. Increasing uses of CFCs and halocarbons have led to an emergence of various health issues and environmental problems which are in some cases fatal.
Our planet earth is surrounded by a blanket of gases called atmosphere that sticks to the ground due to gravity. It is made of various gases, among them ozone is a vital one. Ozone is the form of oxygen, each molecule of which
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The most noticeable effect is the risk of several types of skin cancer including malignant melanoma and squamous cell carcinoma. As ozone layer decays, hole forms in the layer which allows more radioactive rays to come in contact of human skin and results in various skin diseases. Constant exposure to UV radiation also causes early aging. It even creates photokeratitis and cataracts and damages immune system. It also leaves negative impression on other creatures along with plants. Such as- it causes mutation and hampers development and growth in larvae. In plants, UV radiation alters the flowering time as well as the number of flowers produced by a plant, even the plant growth. Planktons work as foods for other marine life. Marine phytoplanktons play important roles in converting atmospheric carbon -di-oxide into oxygen. Ozone holes make them more exposed to radiations interrupting their survival rates and mobility. This leads to the ultimate disturbance of the marine ecosystem(Causes). That’s not all, ozone layer depletion has environmental aspects also. It directly affects biodiversity by mutation. ODS are also very potent greenhouse gases. Increase in amount of ods means increase of greenhouse gases so ozone hole formation implicitly indicates increasing phenomenon of global warming.( Protecting
The ozone layer is the one that protects living things from the pure ultraviolet rays of the sun.
15.2) The accumulation of chlorofluorocarbons is responsible for depleting the atmospheric zone. The atmospheric zone has changed in concentration due to human activity. The CFCs release chlorine atoms which react with ozone reducing it to molecular O₂. Following chemical reactions release the chlorine which reacts with other ozone molecules in a catalytic chain reaction. The ozone layer is getting thinner and thinner as stable air at places such as Antarctica allows reaction to continue. The accumulation of CFCs has led to increased UV radiation in sunlight reaching the earth thereby decreasing ozone levels. The global temperature has increased.
When CFC molecules reach the stratosphere, the sun's radiation breaks it apart, freeing the chorine atom to destroy ozone molecules. The effect is a growing ozone hole which forms over Antarctica in October and usually lasts through mid November. During the annual ozone hole, the amount of UV radiation that reaches the Earth can double. Ozone depletion serves as a major health risk for human beings. The three primary health effects of ultraviolet radiation on human health are damage to the skin,eyes, and immune system.
The depletion of the ozone layer has been a trending topic after it was first discovered in 1970. The ozone layer is a portion of the earth’s stratosphere which absorbs most of the sun’s UV rays hence preventing cancer and other fatal illness to the skin. It contains high concentrations of O3 and at a constant rate is being broken down and. Since 1970, it has been discovered that about 4% of the ozone layer wears off every decade and is as a result of day-to-day human activity.
Along with being aware about air pollution, we should also be aware about ozone concentrations and fossil fuel burning. The public should be concerned with ozone concentrations because they are constantly increasing. Ozone levels are increasing because of the heat and pollution. The public should be informed on how to reduce pollution and heat. Some steps the public can take to reduce pollution are to use public transportation and electric vehicles, conserve energy and recycle. Moreover, planting more plants will reduce heat and decrease ozone levels. Ozone is considered “bad” when found in the lower troposphere because it leads to many health effects in humans. Breathing ozone can cause bronchitis, emphysema, and asthma. Therefore, humans should stay indoors in the afternoon during the summer months. “Bad” Ozone also damages our crops and forests, affecting our food chain and the economy. Ozone is considered “good” in the Stratosphere because it protects us from dangerous ultraviolet rays released by the sun. Ozone in the Stratospheres protects us from conditions such as skin cancer and cataracts. Furthermore, ozone in the atmosphere protects our crops, thus playing
During this period, all over the world is facing with one of the biggest problem, the Global Warming. Global Warming makes average level of Earth’s temperature increasing this is causing by two main phenomena; increasing of greenhouse gases levels all over the world and ozone depletion in the atmosphere. Greenhouse effect made up by several groups of gases that we know as greenhouse gases. In general, the levels of these gases were controlled by nature, so the level of the greenhouse gas was constant and in the appropriate amount but because of human activities such as fossil fuel combustion, intensive agriculture and over global population take role and disturb the nature activity. They were increasing the level of greenhouse gases around the world. Ozone depletion is when the layer of ozone becoming thinner and thinner by some type of gases such as chlorofluorocarbon (CFCs). So that mean greenhouse effect and ozone depletion related to each other by be the main cause that make Global warming happen.
Many people may not know it, but factory smoke, and anything that the earth uses for gas damages our ozone layer. These things are releasing too much carbon dioxide. More carbon dioxide than the vegetation on earth can handle. Trees, grass, and flowers require carbon dioxide to live. They use the carbon dioxide to produce the oxygen that we breathe, but when too much carbon dioxide is put into the air, it causes the vegetation to die, starting with the grass. Without the vegetation a lot of carbon dioxide is being circulated around in the air, causing the ozone la...
In 1970, Crutzen first showed that nitrogen oxides produced by decaying nitrous oxide from soil-borne microbes react catalytically with ozone hastening its depletion. His findings started research on "global biogeochemical cycles" as well as the effects of supersonic transport aircraft that release nitrogen oxide into the stratosphere.2 In 1974, Molina and Rowland found that human-made chlorofluorocarbons used for making foam, cleaning fluids, refrigerants, and repellents transform into ozone-depleting agents.3 Chlorofluorocarbons stay in the atmosphere for several decades due to their long tropospheric lifetimes. These compounds are carried into the stratosphere where they undergo hundreds of catalytic cycles with ozone.4 They are broken down into chlorine atoms by ultraviolet radiation.5 Chlorine acts as the catalyst for breaking down atomic oxygen and molecular ozone into two molecules of molecular oxygen.
The ozone layer is one of the layers of Earth’s stratosphere. The ozone layer absorbs radiation that hits Earth from the sun. Ozone is a good trapper of types of radiations such as ultraviolet radiation or UV light. UV light can penetrate organisms’ protective layers, such as skin, damaging organisms’ DNA molecules. Ozone molecules are made up of three molecules of oxygen atoms and it is always being destroyed and naturally restructured however, chlorofluorocarbons (CFCs), which is a nontoxic, nonflammable chemical that contains atoms of carbon, chlorine and fluorine, is harmful to the ozone layer. Chlorofluorocarbons are used in manufacturing of aerosol sprays, blowing agents for foam, packing materials and refrigerants. Other gasses also affect the ozone layer by causing a hole in the gas layer; this is called the ozone layer depletion. In my view, the ozone layer depletion is hence significant and we as Earth’s residents should prevent the constant expansion of the hole as it results in severe diseases and mutations in organisms.
To create accurate models, scientists must account for all of the factors affecting ozone creation and destruction, and conduct simultaneous, global studies over the course of many years. EPA 2000 - EPA - EPA 2000 - EPA 2000 - EPA 2000 - EPA 2000 - EPA 2000 - EPA 2000 - EPA 2000 - EPA 2000 Conclusion The ozone layer must continue to be protected and we, as individuals, need to take the right steps into preserving our atmosphere and environment by finding new ways to prevent the ongoing destruction that has been done to it. If everyone does his or her part to help, no matter how big or small, we can ensure that this problem is solved.
The ozonosphere or as we know it, the ozone layer, is the region of the Earth’s upper atmosphere. It contains a high concentration of ozone molecules. The ozone molecules in the ozone layer work to block an estimated 97-99 percentage of solar radiation from reaching the Earth’s surface. If the ozone layer were not present the radiation from the sun would kill most living things and make our planet uninhabitable. The size and thickness of the ozone layer varies by location and the time of year. It is larger towards the poles of the earth and at its thickest during the spring time. The ozone layer was first discovered by Charles Fabry and Henri Buisson in 1913. In 1958 a network of ozone monitoring stations were established and still operate today. It is important to understand and monitor our ozone layer in order to protect ourselves from the sun’s harmful radiation. We will look at the current status of the ozone layer, the main causes of its degradation, and what the future holds for the ozone layer if we don’t change the way we live.
Atmospheric ozone layer depletion is a serious problem currently facing the world. The ozone layer protects humans, animals, and plants from harmful ultraviolet rays. Money and time are being spent on ozone repair, but the problem still exists.
Ozone gas forms a layer all around the earth high in the stratosphere. It serves as a vital and effective protective barrier from the sun's ultraviolet rays. In recent years, scientists have sounded alarms internationally about the depletion of the ozone layer, citing chemical pollution as the major cause.
The atmosphere is an open system that consists of a gaseous mixture enveloping a planet (Answers.com). These gasses, known as air, include O2, N2 and H2O. The atmosphere is also composed of water, ice and dust particles. Atmosphere functions like a blanket, keeping Earth's heat from escaping into space (Lenkeit). It has also been compared to a greenhouse: like glass it lets short wave insulation inside, but keeps most of long wave ground radiation from going out (Lenkeit).
Global warming is an increase in the earth's temperature due to fossil fuels, industry, and agricultural processes caused by human, natural, and other gas emissions. This results in an increased evacuation of greenhouse gases. “Short-wave solar radiation sinks into the Earth's atmosphere and warms its surface while long-wave infrared radiation emitted by earth's surface is absorbed, and then re-emitted by trace gases.” (2)