Justify 'Dust is a Pollutant'.

Explanation

(i) Dust consists of suspended particles.The latter pass into nasal tract and cause a lot of discomfort including alergic asthama, brounchitis, cough and cold (ii) Dust reduces light intensity (iii) Dust particles are eye irritants. (iv) Dust particles settle over plant foliage and reduce photosynthetic acitivity (v) Dust particles block stomata redues gaseous exchange in plants (vi) Dust particles can pick up toxic metals and chemicals being emitted by industries.