various kinds of rubbish,waste and toxic industrial waste are seriously polluting the environment.Air an improtant element of our environment is polluted by smoke product by fires,mills,factories trucks,cars etc..water another vital element of the environment is also polluted in different ways such as by waste chemical fertilizers and insecticides,food waste and human waste and by dumping oil.
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The world is producing millons of tons of domestic rubbish and toxic industrial waste each year,and it is becoming increasingly difficult to find suitable locations to get rid of all the refuse.the disposal of various kinds of waste is seriously polluting the environment. we know that air is an improtant element of our environment and our air is polluted by smoke.man makes fires to cook food,make bricks, melttar for road construction and to do many other things.fires create smoke byburnings coal and oil.millls and factories also belch a lot of smoke. buses,trucks and cars use petrol and diesel oil.these too emit smoke. all these kinds of smoke pollute the air.