The establishment of green belts is an attempt to control air pollution through:

Correct option is C

Ans. (c) Sol. The establishment of green belts helps control air pollution through absorption and reduction of pollutants. Trees and plants act as natural air purifiers, absorbing carbon dioxide (CO₂), sulfur dioxide (SO₂), nitrogen oxides (NOₓ), and particulate matter (PM) from the air. Vegetation also helps in oxygen release, temperature regulation, and dust settling, improving overall air quality.
Explanation of Other Options:
· (a) Prevention: Green belts do not prevent pollution at the source but rather help mitigate its effects.
· (b) Protection: While green belts provide some protective barriers, their primary role is reducing pollutant levels, not directly shielding specific areas.
· (d) Filtration: Green belts do not function as mechanical filters but rather absorb pollutants through leaves, bark, and soil interaction.