meaning of pollution in Longman Dictionary of Contemporary English

pollution at any place is to be obtained First we may ask Is the soluble matter actually contained in the rain cloud , or is it washed out of the column

Air pollution, water pollution and noise pollution are among the different ways to contaminate the environment

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pollution pollution , 40 Edward A , re sludge treat- Plans for treatment works , 16 Points of investigation , 10 Pollution reference , text of , 5 ; scope of