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Username: Post Subject: Post Icon: no icon Your Message: [quote="Anand Mathew Thomas" pid='9741' dateline='1502917382'] Helpme I have model exam tomorrow I don't anything about environment want to know something [/quote] Post Options: Disable Smilies: disable smilies from showing in this post. Thread Subscription: Specify the type of notification and thread subscription you'd like to have to this thread. (Registered users only) Do not subscribe to this thread Subscribe without receiving any notification of new replies Subscribe and receive email notification of new replies Subscribe and receive PM notification of new replies

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Posted by Anand Mathew Thomas - 08-16-2017, 09:03 PM

Helpme I have model exam tomorrow I don't anything about environment want to know something

Posted by pratik - 08-16-2017, 09:03 PM

Pollution is the introduction of contaminants into the natural environment that cause adverse change. Pollution can take the form of chemical substances or energy, such as noise, heat or light. Pollutants, the components of pollution, can be either foreign substances/energies or naturally occurring contaminants. Pollution is often classed as point source or nonpoint source pollution.