Презентация "Охрана окружающей среды"
презентация к уроку по английскому языку (8 класс) на тему

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Environment protection Our planet Earth is only a tiny part of the universe , but nowadays it's the only place where we can live . People always polluted their surroundings . But until now pollution was not such a serious problem . People lived in rural areas and did not produce such amount of polluting agents that would cause a dangerous situation in global scale . With the development of overcrowded industrial highly developed cities , which put huge amounts of pollutants into surrounds , the problem has become more and more dangerous . Today our planet is in serious danger . Acid rains , global warming , air and water pollution , and overpopulation are the problems that threaten human lives on the Earth . In order to understand how air pollution affects our body , we must understand exactly what this pollution is . The pollutants that harm our respiratory system are known as particulates . Particulates are the small solid particles that you can see through rays of sunlight . They are products of incomplete combustion in engines , for example : internal-combustion engines , road dust and wood smoke .

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Environment protection Billions of tons of coal and oil are consumed around the world every year . When these fuels are burnt , they produce smoke and other by-products , which is emitted into the atmosphere . Although wind and rain occasionally wash away the smoke , given off by power plants and automobiles , but it is not enough .. These chemical compounds undergo a series of chemical reactions in the presence of sunlight ; as a result we have smog , mixture of fog and smoke . While such pollutants as particulates we can see , other harmful ones are not visible . Among the most dangerous to bur health are carbon monoxide , nitrogen oxides , sulfur dioxide and ozone or active oxygen . If you have ever been in an enclosed parking garage or a tunnel and felt dizzy or lightheaded , then you have felt the effect of carbon monoxide (CO). This odourless , colourless , but poisonous gas is produced by the incomplete burning of fossil fuels , like gasoline or diesel fuel . Factories emit tons of harmful chemicals . These emissions have disastrous consequences for our planet . They are the main reason for the greenhouse effect and acid rains .

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Environment protection Our forests are disappearing because they are cut down or burnt . If this trend continues , one day we won't have enough oxygen to breathe , we won't see a beautiful green forest at all . The seas are in danger . They are filled with poison : industrial and nuclear wastes , chemical fertilizers and pesticides . If nothing is done about it , one day nothing will be able to live in our seas . Every ten minutes one kind of animal , plant or insect dies out forever . If nothing is done about it , one million species that are alive today may soon become extinct .

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Environment protection And even greater threats are nuclear power stations . We all know how tragic the consequences of the Chernobyl disaster are . Fortunately , it's not too late to solve these problems . We have the time , the money and even the technology to make our planet a better , cleaner and safer place . We can plant trees and create parks for endangered animals . We can recycle our wastes ; persuade enterprises to stop polluting activities , because it is apparent that our careless use of fossil fuels and chemicals is destroying this planet . And it is now more than ever apparent that at the same time we are destroying our bodies and our future .

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Environment protection Thanks for watching