The ozone layer protects the Earth from the ultraviolet rays sent down by the sun. If the ozone layer is depleted by human action‚ the effects on the planet could be catastrophic. Ozone is present in the stratosphere. The stratosphere reaches 30 miles above the Earth‚ and at the very top it contains ozone. The suns rays are absorbed by the ozone in the stratosphere and thus do not reach the Earth. | | | | | | The Ozone Layer Over Time. Image Credit: Institute for Studies in Development
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How much fresh water is used by Americans daily? trillion gallons Identify three causes of water pollution. sewage‚ chemical waste‚ pesticide runoff Smog is composed of which chemicals? carbon dioxide‚ nitrogen‚ and sulfur dioxide Smog‚ combined with precipitation‚ results in what harmful effect? acid rain How is burying and burning waste harmful to the environment? Burying waste causes toxic chemicals to leech into the ground water. Burning waste causes toxic ash‚ which pollutes
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Is Water a Human Right? by GARRETT HEANEY “Access to safe water is a fundamental human need and‚ therefore‚ a basic human right. Contaminated water jeopardizes both the physical and social health of all people. It is an affront to human dignity.” — Kofi Annan‚ prior United Nations Secretary-General … If only the issue of water as a human right was as simple as Kofi Annan’s perspective. A world where humans have a well defined set of undeniable rights is an important goal for this generation. But
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Pollution is the introduction of harmful substances or products into the environment. It is a major problem in America and as well as the world. Pollution not only damages the environment‚ but damages us also. It has cause many problems ranging from lung cancer to the greenhouse effect. It is among us all‚ but we continue to live our lives in our own filth. What is the reason behind this flawed logic? In this paper I will examine the problems and solutions for this issue. Automobiles are undeniable
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Pollution Introduction Pollution is when water‚ air or land becomes very dirty. Pollution can come in 4 different types effecting different types of areas in the world. Air pollution affects the air‚ water pollution affects the water and marine life‚ land pollution effects the land destroying life and the environment and there is also noise pollution that can effect our hearing. We all contribute to pollution in some way or another. Whether it be with a large amount or small amount we can still
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• Depletion of ozone and formation of ozone hole • Ozone‚ in fact is a gas having fishy smell and O3 molecules which works as the protective shield for the life in the earth. It absorbs solar ultraviolet radiations and thereby protects life on the earth from several damage such as DNA mutation‚ skin cancer‚ blood cancer‚ etc. In the year 1985‚ NASA detected the thinning out of the ozone layer leading to the formation of ‘ozone hole’ in Antarctica. Since then the scientists have been regularly
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From Water to Land (Revision) Abstract: The early tetrapods were the first vertebrates to actually walk the solid earth. They began their conquest of land in the Paleozoic era around 360 million years ago. The question many paleontologists have been asking for a long period of time is whether the anatomy for locomotion on land was developed in water for swimming purposes‚ or if it was adapted after the creatures became terrestrial. Recent findings of fossils indicate that the transformations
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Water pollution New York City has several water quality concerns and issues. Water pollution occurs with adequate treatments fails to remove harmful compounds from the water bodies. They affect inhabitants such as humans‚ and animals negatively by other toxins being combined and spread. The sewage system is a significant component that takes part in the megacity. We often wonder what is a sewage? A sewage is water mixed with human or animal wastes from residence‚ buildings‚ and other places‚ this
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explains about the surface tension and capillarity of liquid through a simple experiment of finding the capillarity of various detergents. Oil stains and grease on dirty clothes cannot be removed‚ using water alone‚ because water does not wet them. If detergents added ‚ surface tension is decreased‚ the area of contact is increased. Detergent molecules have the shape of a hairpin‚ one of which is attracted to water and the other end to the molecule of the grease‚ thus forming a water grease interface
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Faiz‚ Asif; Weaver‚ Christopher S.; Walsh‚ Michael P. Air Pollution From Motor Vehicles: Standards And Technologies For Controlling Emissions Washington‚ D.C. World Bank‚ 1996. The book “Air Pollution From Motor Vehicles: Standards and Technologies for Controlling Emissions”‚ is about how cars are one of the primary sources for air pollution. The author gives various emission regulations and standards for different countries such as Columbia‚ Canada‚ Brazil‚ and Argentina. The book goes into detail
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