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Question

Air pollution on the roads can be reduced by_________.
  1. Discouraging the use of CNG in vehicles
  2. Both (B) and (C)
  3. Planting trees on roadsides
  4. Reducing the number of vehicles on the road

A
Both (B) and (C)
B
Reducing the number of vehicles on the road
C
Discouraging the use of CNG in vehicles
D
Planting trees on roadsides
Solution
Verified by Toppr

  • Trees and other vegetation restrict airflow in their immediate vicinity, preventing pollution from being diluted by currents of cleaner air. In particular, tall trees with thick canopies planted alongside busy roads can act as a roof, trapping pockets of polluted air at ground level.
  • Air pollutants from transport include nitrogen oxides, particles, carbon monoxide, and hydrocarbons. All have a damaging impact on the health of people, animals, and vegetation locally. Thus, reducing the number of vehicles on the road will reduce pollution.

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