Ecological problems of pollution
Доклад, 25 Февраля 2013
Worldwide the stinky problems of pollution.
Many cars, trucks and factories add bad breath to the air.
Many cities have dirty air.
Chemical called sulfates puff out of coal burning factories.
When sulfates mix with clouds, acid rain falls and harms plants & creatures.
Ecological Problems of the Aral Sea
Статья, 26 Ноября 2013
Unfortunately mankind has achieved tremendous success in polluting its environment also. Finally, the humanity started paying more attention to what surrounds it. It started thinking about the future .
Currently, humanity has plenty of global environmental problems that it has to take care of now. Desiccation of the Aral Sea is one of the items on the list. The Aral Sea , is located in southwestern Kazakstan and northwestern Uzbekistan, near the Caspian Sea. The Aral Sea is still listed as the fourth largest lake in the world. But the statistic might change.
Ecology
Сайт-партнер: turboreferat.ru
Реферат, 20 Ноября 2010
We live on a very beautiful planet – on the Earth. Our planet has very rich resources: the bright blue of the sky, fresh, crystal-clear mountain lake water, the rich green of the mountains slopes, wild flower, picturesque views – all these sceneries of nature fill us with admiration.
That’s why those who live in cities prefer spending their days off and their holidays far from the noise of the city, to be closer to nature. Perhaps they like to breathe fresh air or to swim in clear water because the ecology is not so poor as in the cities.
Ecology is the study of the ways in which organisms (plants and animals) depend upon each other and upon their surroundings. Each organism requires conditions in order to be able to live and breed. These conditions are its environment by changing the ecological conditions
Ecology
Сайт-партнер: freepapers.ru
Реферат, 05 Июня 2011
Until recently the planet was a large world in which human activities and the nature were in balance. Acid rain, global warming, ozone reduction, widespread desertification and species loss: we have to face them now.
Texts ecology
Сайт-партнер: student.zoomru.ru
Курс лекций, 14 Июня 2012
курс лекций по экологии на английском языке
Ecological tourism
Сайт-партнер: freepapers.ru
Доклад, 22 Декабря 2011
Ecotourism is a form of tourism, which involves travelling to tranquil and unpolluted natural areas. According to the definition and principles of ecotourism established by The International Ecotourism Society (TIES) in 1990, ecotourism is “Responsible travel to natural areas that conserves the environment and improves the well-being of local people”.
There are a lot of definitions of ecotourism. They are green tourism, natural tourism, severe tourism. The last one means a type of a holiday in wild conditions without any conveniences.
Ecological problems
Сайт-партнер: myunivercity.ru
Доклад, 23 Октября 2013
Since ancient times Nature has served Man, being the source of his life. For thousands of years people lived in harmony with environment and it seemed to them that natural riches were unlimited. But with the development of civilization man's interference in nature began to increase.
Large cities with thousands of smoky industrial enterprises appear all over the world today.
Ecological problems
Сайт-партнер: freepapers.ru
Статья, 02 Ноября 2011
Ecological problems
The Earth is the only planet in the solar system where there is life. If you look down at the Earth from a plane you will see how wonderful our planet is. You will see blue seas and oceans, rivers and lakes, high snow-capped mountains, green forests and fields. For centuries man lived in harmony with nature until industrialization brought human society into conflict with the natural environment. Today, the contradictions between man and nature have acquired a dramatic character. With the development of civilization man's interference in nature has increased. Every year the world's industry pollutes the atmosphere with millions of tons of dust and other harmful substances. The seas and rivers are poisoned with industrial waste, chemical and sewage discharge. People who live in big cities are badly affected by harmful discharge from plants and city transport and by the increasing noise level which is as bad for human health as lack of fresh air and clean water.