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Paheli observed that most of the fish in the pond of her village were gradually dying. She also observed that the waste of a factory in their village is flowing into the pond which probably caused the fish to die.
(a). Explain why the fish were dying.
(b). If the factory waste is acidic in nature, how can it be neutralised?
 
(a). If factories waste chemicals into water bodies, it threatens aquatic (fish) life and anyone using or drinking that water. present in factory waste kill aquatic (fish) organisms.

(b). If the waste is in nature, it can be neutralized by adding basic chemicals; just as the water in the pond can be , we can make it less harmful and neutral.