If we pollute them, then the existence of man and nature will be hampered. It is true that trees are being cut down rapidly. Our earth is becoming warmer.
If pollution continues, the day is not far when our earth will be a boiling pan and become a desert. Or it will be covered with sea water causing destruction of mankind. Pure air is always needed for inhaling. If we take pure air, our health improves. On the other hand impure air causes diseases and impairs our health and causes our death. Smoke pollutes the air. It is the root of air pollution. The smoke which is discharged from industries, automobiles and kitchens is the mixture of carbon monoxide, carbon dioxide, methane etc.
These are all poisonous gases. These cause lung-cancer, tuberculosis etc. The glaring incident is the Bhopal gas leak in December Thousands of the residents of Bhopal died due to lungs problem which was caused by methylamine gas from the Union Carbide Plant.
The garbage emitting foul smell, the decaying plants and animals also cause air pollution. Hence the doctors advise the patients having lungs trouble to settle in some rural places because the air of villages is pure and free from population. Then comes sound pollution. The harsh sounds of buses, its, mopeds etc.
It has been reported that there are two villages named Biraspalli and Devadas Palli near Dum Dum airport m Calcutta where a large number of people have lost their power of hearing. This is because of the frequent sounds of planes coming in and going out of Dum Dum Airport. The evils of sound pollution can be imagined from this example. Contamination is the presence of harmful substances or organisms that may cause diseases or discomfort to human beings. Polluted material need not necessarily be contaminated.
Dependent as he is on air, water and food from environment, man is the main culprit in polluting these natural resources to the point of no return. Pollution is defined as the addition of extraneous materials to water, air or land which adversely affect the natural quality of the environment. In some cases, it may involve the removal, rather than addition, of constituents from the environment. A pollutant is a substance which may alter environmental constituents or cause a pollution.
A pollutant can also be defined as constituent in the wrong amount at the wrong place or at the wrong time. For example, nitrogen, phosphorus and potassium are extensively used in agriculture to increase crop yields but sometimes they cause pollution of lakes and rivers by promoting algal growth.
The natural sources of pollution are, no doubt, important on a global scale man generated pollutants may be more important in urban and industrial areas where the adverse effects of pollution are most severe. There is accumulating evidence that many types of pollutants can be distributed over the whole earth in relatively short period of time. Coal, diesel oil and other fossil fuels are emitting suffocating SO 2 and choking our lives. Synthetic chemicals like plastics are adding to the problem of solid waste disposal; while detergents that cannot be decomposed by micro-organisms are making the natural rivers and streams polluted bubble boxes.
Some other effects of environmental pollution are problems of health, soil erosion, sanitation, water supply, energy crisis, population and depletion of natural resources. The law of conservation of mass or material equally applies to the pollutants and while one cannot destroy them, they may be changed from one state to another or from one compound to a another.
The presence of small amount of pollutants may make profound influence on human health even when the level of air pollutants is so low that they cannot be detected except with special instruments. Some pollutants may harm living creatures exposed for long periods of time.
These pollutants are natural organic compounds which are degraded by biological or microbial action sewage. As regards the nature of pollutants, the problem of pollution can be divided into the following categories: Solid wastes are useless and unwanted substances that are discarded by human society. Solid wastes include the heterogeneous mass of urban wastes as well as the more homogenous accumulation of agricultural, industrial and mining wastes.
The proportions of different constituents of solid wastes vary from season to season, place to place, extent of industrial and commercial activities and so on. Urban solid wastes are those which are collected and disposed of by municipal bodies. These include the following: Agricultural Solid Wastes such as manure, crop residues, pesticides, insecticides, wastes of farm animals and so on. These are generated by various industrial units such as chemical plants, paint industries, cement plants, metallurgical plants, power plants etc.
The major industries in urban areas that generate substantial amount of non-hazardous solid wastes are fruit and food processing plants, cotton mills, paper mills, sugar mills, textile mills etc. The wastes generated from these industries are biodegradable. Non-hazardous non-biodegradable solid wastes are coal ash or fly ash generated by thermal power plants, blast furnace slags, wastes of steel melting units, muds etc. Some of solid wastes generated by industries are inflammable, corrosive, explosive, chemically highly reactive and toxic.
The major industries that produce hazardous wastes are metal, chemical, drug or pharmaceutical, leather, pulp and paper, electroplating, refining, pesticide, dye, rubber etc. It is estimated that currently the industrial sector generates about million tonnes of non- hazardous solid wastes and two million tonnes of hazardous wastes a year. The surveys conducted by Environment Protection Training and Research Institute from to revealed that the urban population generated g.
The problem of domestic solid waste whether it is garbage, litter or rubbish cannot be underestimated. In advanced countries it is estimated that at an average a city dweller produces more than half a ton of garbage per year.
Major portion of water on the surface of earth is not in a form that can be used for domestic purposes by man since it is saline Man obtains fresh water from the well known hydrologic cycle. Surface runoff gathers minerals and organic impurities as it moves down to the sea.
Under normal conditions river takes care of many polluting substances that enter its body. Green plants and algae take up CO 2 from water and in presence of sunlight synthesize carbohydrates and O 2 is produced by splitting of water molecules. Animals take up O 2 and give up CO 2 and other compounds which are used by the plants.
This is ecological balance in a natural stream. If some organic matters, that can be food materials for bacteria, enter water course then bacteria oxidize these materials and in that process take up O 2 from water. If the process of re-oxygenation is slower than the process of de-oxygenation then river will be devoid of life sustaining dissolved oxygen and aquatic animals and plants will die and under anaerobic condition foul smelling hydrogen sulphide and other products are formed.
The river can be termed dead in the sense that it cannot sustain normal aquatic life. The important source of organic pollutants is sewage which contains faecal matter, urine, and kitchen washings and some soil washing.
Sewage contains large number of bacteria! This value is expressed in terms of mg of O 2 per litre of waste. Since biological reaction is dependent on time and temperature, this O 2 demand called biochemical O 2 demand or B. If the value of B. Domestic sewage in small quantities rarely gives trouble. However, if liquid industrial wastes enter the river along with acid or alkali and poisonous substances like cyanides, etc.
Surface run-off from agricultural fields can carry nitrogen and phosphate fertilizers that enter the aquatic environment and later undergo decomposition adding to the organic loading of the stream.
Essay on Environmental Pollution: Causes, Effects and Solution Category: Blog, Environment On February 5, By Ankita Mitra Environmental pollution refers to the introduction of harmful pollutants into the environment.
Environmental pollution is the biggest menace to the human race on this planet today. It means adding impurity to environment. The environment consists of earth, water, air, plants and animals. If we pollute them, then the existence of man and nature will be hampered.
Environmental pollution is one of the biggest problems the world faces today. It is an issue that troubles us economically, physically and everyday of our lives. The contamination of the environment is also being linked to some of the diseases that are around currently. Yet, most people do not know /5(20). As the environmental pollution is a broad topic consisting of many sub-issues, there may be many approaches to building the consistent pollution essay. For instance, the pollution essay may concentrate on the various types of pollution, like sound pollution (noise pollution), water pollution, air pollution, soil pollution etc.
Free Essay: Environmental Pollution Our environment is affected by our daily actions. The earth is plagued with land, air and water pollution. Some of the. How to write a short essay on environmental pollution, buycoumadin.gq How To Write Environmental Pollution Essay. /08/28 by Amanda Right How to, Writing Samples. Facebook 0 Twitter 0 Google+ 0 Viber WhatsApp. Environmental Pollution Essay. How .