Environmental Issues like Acid rain,over fishing,Deforestation,water pollution,population growth,waste production,Ozone layer depletion,Air pollution,Ocean acidification,Global warming,industrial pollution,the nitrogen cycle,climate change,transportation are main causes to effect life cycle in earth.
Pollution is any change in chemical,physical or biological characteristics of air, land, water or soil. Agents which bring about such an undesirable change are called as pollutants.
In order to control environmental pollution, the Government of India has passed the Environment (Protection) Act, 1986 to protect and improve the quality of our environment (air, water and soil).
There are several ways of removing particulate matter; the most widely used of which is the electrostatic precipitator, which can remove over 99 per cent particulate matter present in the exhaust from a thermal power plant.
It has electrode wires that are maintained at several thousand volts, which produce a corona that releases electrons.
For giving them a net negative charge these electrons attach to dust particles.
The collecting plates are grounded and attract the charged dust particles.
The velocity of air between the plates must be low enough to allow the dust to fall.
A scrubber can remove gases like sulphur dioxide.
In a scrubber, the exhaust is passed through a spray of water or lime.
Recently we have released some particles, according to Central Pollution Control Board, the particulate size 2.5 micrometers or less in diameter (PM 2.5) and these particles are causing for the greatest harm to human health.
These fine particulates can be inhaled deep into the lungs and can cause breathing and respiratory symptoms, irritation, inflammations and damage to the lungs.
In metro city automobiles are a major cause for atmospheric pollution.
Proper maintenance of automobiles along with use of lead-free petrol or diesel can reduce the pollutants they emit.
In India,on 1981 the Air Prevention and Control of Pollution Act came into force but was amended in 1987 to include noise as an air pollutant.
A extremely high sound level, 150 dB or more generated by take off of a jet plane or rocket, may damage ear drums thus permanently impairing hearing ability.
Even chronic exposure to a relatively lower noise level of cities may permanently damage hearing abilities of humans.