IGNOU FST 1 2012 - Differentiate between primary and secondary pollutants.

Question

Differentiate between primary and secondary pollutants.

28 Oct 2017

Answer :

Word Count : 195

Now-a-days, you might have heard every one talking about pollution. What does pollution mean? Pollution is the addition to the environment (air, water, soil) of substances or energy (heat, sound, radioactivity, etc.) at a rate, and in quantities that are harmful to life. Pollution has a long history. It became noticeable when larger and larger numbers of people began to live in cities. Unplanned growth of the cities,led to difficulties

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