EARTH The earth is 4.5 billion years old. The Big Bang theory says that there was an explosion caused by the crash of matter which created our Solar System. Millions of years ago‚ during the Paleozoic era‚ the seven continents formed one single super-continent‚ from which they later detached driven by endogenous forces. Mankind appeared on Earth 30000 years ago. According to Darwin organisms which adapt the best to the environment they live in‚ survive the longest. Mankind become the dominant
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Essay 1 Air Pollution: Causes and Effects It keeps us alive but at the same time‚ it can also be harmful. We breathe air everyday. Air provides us with oxygen that is essential for living. Nitrogen‚ water vapor‚ and inert gases comprise air along with oxygen. Emission of substances that contaminate air results to pollution. Causes Air pollution is both natural and human-based. Natural air pollution is caused by phenomenon such as volcanic eruption‚ wind erosion‚ decomposition and radioactive
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Air pollution – contaminants or substances in the air that interfere with human health or produce other harmful environmental effects. Read our “What is Air Pollution?” article for further information. Alternative energy – usually environmentally friendly‚ this is energy from uncommon sources such as wind power or solar energy‚ not fossil fuels. Alternative fuels – similar to above. Not petrol or diesel but different transportation fuels like natural gas‚ methanol‚ bio fuels and electricity. B
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Nowadays‚ our community has many environmental problems‚ but the obviously problem is air pollution. People around the world‚ especially in the cities‚ see air pollution as an important problem because cause it makes many big effects such as worsens earth’s atmosphere and harms living creatures. Air pollution is created by both natural actions and humans activities‚ but mostly‚ air pollution is made by humans. The three principal causes that humans have done are burning fuels in vehicles‚ unsuitable
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H A B I T A T INTL. Vol. 19‚ No. 3‚ pp. 279-292‚ 1995 Pergamon Elsevier Science Ltd Printed in Great Britain 0197-3975/95 $9.50 + 0.00 0197-3975(94)00071-9 Sustainable Development and the Construction Industry* ROBIN SPENCE and HELEN MULLIGANt Cambridge University‚ UK and tCambridge Architectural Research Limited‚ UK ABSTRACT The construction industry‚ together with the materials industries which support it‚ is one of the major global exploiters of natural resources‚ both physical
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Air Pollution Are you doing everything you can do to live a long and healthy life‚ eating healthy‚ exercising? Well that might not be enough‚ everyday the air you breathe can reduce life expectancy by 2 to 3 years; and an estimated total number of 6.3 million deaths caused by air pollution (Air Pollution kills). Air pollution has been going on for years and takes many forms‚ it is harming our environment and killing us slowly; in order to solve this problem the people of the world need to start
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The global warming is now becoming a serious concern to the world. One of the main reasons of this problem is human activities; they pollute their surrounding environment like noise‚ land‚ water‚ and air. This essay will illustrate three important ways to cut down air pollution. The first necessary way to solve this problem is to reduce the using of vehicles. People should change from travel by their own car or motorbike to travel by public transportation such as taxies‚ buses‚ or trains. Likely
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Air Pollution Air is the most important element of life. For some ’air pollution‚’ let us give thanks. Dust and other particles in the atmosphere serve as nuclei about which raindrops form. But man has overloaded the sky. For centuries he has pumped particulate matter and gases into the atmosphere. As far back as 1661‚ a tract on air pollution was published in England: Fumifugium: or the Inconvenience of the Aer and Smoake of London Dissipated. Today much of the world suffers from the eye-smarting
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Effects of Air Pollution in the Environment Air pollution is the unwanted change in quality of the earth’satmosphere caused by the emission of gases and of particulates‚ which are small particles‚ which are small particles of solid matter or droplets of liquid. Polluted air adversely affects the health of human beings‚ animals‚ and plants; it soils damages building and other property; and its reduces visibility endangering travel by air and on the ground. Air pollutants
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Air Pollution CFish Mr. Nollen Biology 2B 8 May‚ 1996 The Problem Contamination of the atmosphere by gaseous‚ liquid‚ or solid wastes or by-products that can endanger human health and the health and welfare of plants and animals‚ or can attack materials‚ reduce visibility‚ or produce undesirable odors. Among air pollutants emitted by natural sources‚ only the radioactive gas radon is recognized as a major health threat. A byproduct of the radioactive decay of uranium minerals in certain kinds
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