Question

In the metropolitan cities chilfren suffer from allergy asthma.what are the main causes of this problem.

Answer 1

Metropolitan cities have large number of people,houses,factories and vehicles.Due to more vehicles there will be more amount of polluted air and even the other resources like air ,water too get polluted due to human deeds.This also causes increase in diseases like asthma,allergy and small kids are more affected because of it.

Answer 2

Causes of Asthma:

Outdoor allergens, such as pollens from grass, trees and weedsIndoor allergens, such as pet dander, dust mites and moldCertain drugs and food additivesIrritants in the air, such as smoke, chemical fumes and strong odorsColds, the flu or other illnessesExercise (although people with asthma can benefit from some exercise)StressWeather conditions, such as cold air or extremely dry, wet or windy weather