Question

Write about water pollution and air pollution its causes and effects​

Answer 1

answer:

Causes of water pollution:

Water pollution is caused by natural and human sources.

Natural sources of water pollution are due to erosion, landslides, gases, soil, minerals.

Human excreta, waste created by animals and other living organisms and rotting vegetation are also some causes. More than natural sources, water pollution is largely caused by human activities.

Humans pollute water through industrial, agricultural and cultural activities. Among these, industry is the worst culprit.

Industries produce a variety of waste products including industrial wastes, polluted water wastes, poisonous gases, chemical residuals, numerous heavy metals, dust, smoke etc.,

Most of the industrial wastes are disposed off by running water. Consequently poisonous elements reach the lakes, river and other water bodies, which destroy them.

Reservoirs -They in turn destroy the bio-systems of the water. Major water polluting industries are leather, pulp and paper, textiles and chemicals.

Fertilizers, pesticides and insecticides, farm wastes and mineral particles from agricultural lands are washed down and end up in rivers, lakes and tanks.

The chemicals also infiltrate into the soil to reach the ground water.

Addition of fertilizer increases the nitrate content of surface waters.

Religious and cultural activities like pilgrimages, fairs, tourism, immersion of idols after pujas etc., also cause water pollution,

Urban activities such as improper sewage disposal also cause water pollution.

Effects of water pollution: Water pollutants adversely affect the health of humans, animals and aquatic life.

Water pollution is a source of various water borne diseases like diarrhoea, intestinal worms, hepatitis etc.

World health organization shows that about one fourth of the communicable diseases in India are diseases water borne.

Answer 2

Water pollution :-

causes :-

1) water pollution caused by natural phenomena

2) water pollution caused by human behaviour

3) increasing meat consumption

4) chemical fertilizers

5) fossil fuels

effects :-

1) effects of human

2) effects on animals

3) effects on water animals and plants

4) destruction of whole ecosystems

5) disruption of the food chain

Air Pollution :-

causes :-

1) dust of vehicles etc

2) fossil fuels

3) waste deposition in landfills

4) mining

5) radioactive decat

effects :-

1) lungs diseases

2) cancer

3) effects on agriculture

4) economic effects

5) global warming