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                                                                                                      Pollution










            Pollution can be defined as any undesirable change is the physical, chemical or biological properties of air, water or
            land. Pollutants are the undesirable substances that are added to air, water or land. Pollution can mainly  be of 3 types:
            air pollution, water pollution and land or soil pollution. Air and water pollution will be discussed in this chapter.


             Discussion



                             Jack   :   Yes  !  Of  course  the                    Suzi   :   Hey ! Jack what happened ?
                                       pollution of the city is at
                                       it’s peak now-a-days.





                                                                                   Suzi   :   Lets read the chapter then
                             Jack   :   I’m really worried about                              to  find  out  the  ways  to
                                       the  rising  pollution                                 prevent or control it.
                                       ..........






            POLLUTION

            Definition  :  Any  undesirable  change  in  the
            physical, chemical or biological properties of
            air, water or land is called pollution.

            Pollutants  :  Substances  that  cause  pollution
            are called pollutants.

            Types  :  Broadly,  pollution  can  be  of  three
            types :
            1.  Air pollution

            2.  Water pollution
                                                                                         Air pollution
            3.  Land or soil pollution

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