Сочинение на тему природа и экология

Ecology is the study that helps to preserve the Earth, its plants andanimals. It is also supposed to study the environment and therelationship between human activities and nature. Until recently thisrelationship was in balance. However, at present times we have to facesuch ecological problems as acid rain, global warming, loss of rarespecies, ozone reduction, etc. Many scientists think that it isconnected with industrial boom and development of civilization in theworld. Building numerous factories people have started to interfereintensively in nature. Every year world industry pollutes the atmospherewith tons of dust and other harmful things. As a result many species ofanimals and plants disappear forever, including fish and birds. Manylarge cities suffer from factory smog. Their activity pollutes the air,the water, the forests and the land. Apart from factories there are lotsof vehicles in the streets of every more or less developed city. Itincludes cars, motorbikes, buses, minivans, trucks and other types oftransport which use fuel. First of all, they exhaust toxic gases intothe air. Secondly, they are considered to be the main noise offenders inthe city. This problem progresses as the number of cars increases fromyear to year. As a result the level of harmful substances in the airalso increases. Another problem which is worth mentioning is the treecutting. Trees are a source of oxygen and clean air. So, by doing thispeople simply violate the biological balance. All the above mentionedecological problems are the result of man’s careless interaction withnature. In my opinion, environmental protection should become of aglobal concern and serious measures should be taken to create ecologicalsecurity.