7th Class Science Sample Paper Science Sample Paper - 6

  • question_answer
    How can we control water pollution?

    Answer:

    We can control water pollution by adopting following measures:
    (i) By avoiding disposal of industrial and household wastes into river water
    (ii) By avoiding washing of clothes, cleaning utensils and bathing with soap near the source of water.
    (iii) By covering the mouth of well so that dust, leaves etc., may not fall into it.                  


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