Environmentalmedium · Past Paper
Which of the following can be used to control noise pollution?
APlanting more trees (Green Mufflers)
BRemoving silencers from vehicles
CUsing loudspeakers at night
DBuilding more concrete walls
✓ Correct Answer: A — Planting more trees (Green Mufflers)
Trees can absorb and scatter sound waves; rows of trees along roads are often called 'Green Mufflers'.
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