Biology
The number of asthma patients increases during winters in metropolitan cities like Delhi. Why is it so? How can it be reduced?
Pollution
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Answer
During winters in metropolitan cities like Delhi, the fog and smoke together form smog. Inhalation of smog causes rise in patients of asthma.
It can be reduced by:
- Installation of tall chimneys in factories with filters.
- Electrostatic precipitators.
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