Ecological problems
23 Октября 2013 в 22:26, доклад
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.
The most serious ecological problems
03 Марта 2014 в 21:22, реферат
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. The by-products of their activity pollute the air we breathe, the water we drink, the land we grow grain and vegetables on.
Over the years of technological revolution, we have experienced various kinds of environment problems, destruction of ozone layer, global warming, greenhouse effect and other phenomena that aggravate the ecological situation.
Ecological problems and environmental protection
25 Февраля 2014 в 20:46, реферат
Some people live in a town environment; for others their environment is the countryside. Nowadays people understand how important it is to solve the environment problems that endanger people’s lives. The most serious environmental problems are:
· Pollution in its many forms (water pollution, air pollution, nuclear pollution)
· Noise from cars, buses, planes, etc.
· Destruction of wildlife and countryside beauty
· Shortage of natural resources (metals, different kinds of fuel)
Ecology
Сайт-партнер: turboreferat.ru
20 Ноября 2010 в 13:14, реферат
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
05 Июня 2011 в 12:28, реферат
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
14 Июня 2012 в 00:07, курс лекций
курс лекций по экологии на английском языке
Ecological tourism
Сайт-партнер: freepapers.ru
22 Декабря 2011 в 21:07, доклад
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: yaneuch.ru
05 Июня 2013 в 04:35, доклад
Scientists now predict that by the year 2050 the population will be doubled what is today. The fact remains that the rate of food production fell behind population growth in many of developing countries. The annual fish catch already exceeds what the world ‘s oceans can successfully sustain. If we go on using our natural recourses at today’s rates, we will have used up the intire reserves of cooper, natural gas and oil by the year 2054. But the problem ahead lie not so much in what we use but in what we waste. What faces us is not so much a recourse crisis as a pollution crisis. The only solution is to try to change the areas of consumption, technology and population. Changes in technology must be baked by slower population growth. And it can be achieved by education in health and women’s rights. And there is a little hope of reducing consumption over the next half century.