Environmental Engineering in CE

Ambient noise level can be reduced by _____ decibels by planting trees (like coconut, neem etc.) near public utility buildings (like hospitals & schools).

  • A. 1-2
  • B. 5-10
  • C. 15-20
  • D. 25-30
Answer: Option B.
Explanation: 

No answer description available for this question

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