Ecological Problems of Kazakhstan
Статья, 11 Февраля 2013
Lead and its toxic compounds are dangerous environmental pollutants. The influence of these substances on the health of human beings, especially children, who are the most vulnerable to the harmful impact of lead, is worthy of special study, for the following reasons:
- lead is widespread (practically everywhere) in places where people reside;
- lead, even in extremely low concentrations in the environment, is capable of having a negative impact on children’s health;
- lead causes significant damage to the human nervous system, which has a negative effect on the intellectual development of the growing generation;
Ecological problems in Georgia and in the regions
Реферат, 05 Декабря 2010
"Ecology" is a very popular word today. But what does it mean? Ecology is a science that studies the relationships between all forms of life on our planet and the environment.
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.
Problems of ecology
Сайт-партнер: referat.yabotanik.ru
Реферат, 14 Января 2011
We live in toxic times. Never before in recorded history have human beings been packed so closely together, under such toxic and stressful conditions, as in our cities today. Never before have we exposed our planet and our bodies to so many different kinds, and increasing quantities of toxins (poisons). This includes chemicals, heavy metals, toxic fumes, radiation, and other poisons in our air, food, and water. No one knows the full consequences of all these different toxins building up and interacting inside human bodies. But we can see some of the effects in bodies around us, or by looking in a mirror.
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.