Please answer these questions.

Q. Answer in one line :-

   (i) Water is a renewable resource. By which process is water recycled in nature ?
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  (ii) The substances that pollute water or air are called ................................

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  (iii) Hot water discharge into rivers from factories is also a pollutant. What do we name such pollution ?
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(iv) Give one word for enrichment of water of a lake or pond by nutrients that leads to excessive plant growth ?
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(v) Name any two toxic metals whose compounds are present in industrial wastes.
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(vi) Name two diseases caused by drinking polluted water containing sewage.
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Dear student,            
Please find below the solution to the asked query         
                                                   
 i. Water cycle causes recycling of water in nature.      

ii. Pollutants.

iii. Thermal pollution.

iv. Eutrophication.

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