Question

short speech on air pollution....

Answer 1

Air pollution is one of the main environmental issues nowadays. There are many reasons behind regularly increasing this air pollution. Most of the air pollution is caused by the automobiles, transport means, industrialization, growing cities, etc. The release of several harmful gases or dangerous elements from such sources is causing the whole atmospheric air pollution. Ozone layer is also getting affected too much by the air pollution which causes serious disturbances to the environment. Increasing need of the ever growing human population is main cause of pollution. Daily human being activities causing dangerous chemicals to release, making atmosphere dirtier than ever and forcing the climate change negatively.

Industrialization process releases many harmful gases, particles, paint and batteries contains lead, cigarettes releases carbon monoxide, transport means releases CO2 and other toxic substances to the atmosphere. All the pollutants are being in contact with the atmosphere, destroying the ozone layer and calling harmful rays of sun to the earth. In order to reduce the level of air pollution we should bring some huge changes to our habits on daily basis. We should not cut trees, use public transportation, avoid spray cans, and so many activities in the favor to reduce the effects of air pollution.

hope it will help you

Answer 2

WHO has defined air pollution as “the presence in air of substances put there by acts of man in concentrations sufficient to interfere with the comfort, safety, or health of man or with the full use or enjoyment of his property. The presence of contaminants in the atmosphere is considered to be in sufficient quantities and duration, to cause them to be injurious to human health, animal and plant life and reduce welfare in general.”

Causes of Air Pollution:

There are two sources of air pollution:

(a) Natural Sources:

There are many natural sources of air pollution, such as volcanic eruptions, forest fires, dust storms, pollen grains of flowers, spores of fungus, etc.

(b) Man-made Sources:

Air pollution is also due to human activities.

There are many causes of air pollution which are discussed below:

(1) Pollution by Industries:

The problem of industrial pollution is acute in areas where petroleum refineries, chemical industries, pulp and paper and textile industries are concentrated. Even small scale industries like foundries, and brick making are significantly air polluters.

(2) Pollution by Vehicles:

Increasing vehicular traffic is the most important source of air pollution in big cities. Other reasons for this are two stroke engines, old vehicles, traffic congestions, bad roads and obsolete automotive technologies and lack of traffic management system.

(4) Agricultural Activities:

Most of the pesticides are applied through spraying in the fields. This spraying increases the quantity of many chemicals used in pesticides in the surrounding atmosphere and hence pollutes the environment.

etc.