The world is producing millions of tons of domestic rubbish and toxic industrial waste each year, and it is becoming encreasingly difficult to find suitable locations to get rid off all the refuse. The disposal of various kinds of waste is sereously polluting the environment. We know that air is an important element of our environment and our air is polluted by smoke. Man makes fire to cook food, make bricks, melt tar for road construction and to do many other things. Fires create smoke and pollute the air. Railway engines and power house create smoke by burning coal and oil. Mills and factories also belce a lot of smoke. Buses, tructs and cars use patrol and diesel oil. These to emit smoke. All these kinds of smoke pollute the air.
So, we should try to avoid these smoke creators things and makes a pollution free world for our next generation.
