30. Which one of the following gives us most protection against noise pollution? a. Ear protectors b. Cotton wool
C. Lab coat
d. Safety spectacles
Answers
Answered by
0
Answer:
option number 'd' is a right answer
Answered by
1
Answer:
a. Ear protectors and b. Cotton wool
Explanation:
Cotton wool also gives us protection from noise pollution but ear protectors give more protection from noise pollution.
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