2min speech on air pollution for ASL class 9th
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. sources of air pollution
.☺. Natural Sources such as first fire Ashes from smoking or burning volcanic eruptions extra this matter and usually cannot be controlled.
.☺. man made sources such as increase in pollution excessive use of automobiles increase in organisation extra this matter are man made and usually can be controlled.
.☺. Natural Sources such as first fire Ashes from smoking or burning volcanic eruptions extra this matter and usually cannot be controlled.
.☺. man made sources such as increase in pollution excessive use of automobiles increase in organisation extra this matter are man made and usually can be controlled.
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