Question

please answer for my question please you in what 50 points please please please please bhaiya​

Answer 1

Answer:

11. d)all of the above

12.d)all of the above

13.d)all of the above

14.d)all of the above

15.d)plant trees to reduce sound pollution

16.d)A hack-saw blade which is fixed at one end will produce feeble sound when it is......................

Explanation:

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