Haryana PMT Haryana PMT Solved Paper-2008

  • question_answer
    Bio-indicators are used for

    A)  oxygen demand             

    B)  air pollution

    C)  mineral present              

    D)  All of the above

    Correct Answer: D

    Solution :

                    Any organism which can be used to characterize    particular    environmental properties is called biological  indicator, eg, pollution oxygenation.


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