Which of the following is a reason for rising asthma in developed countries?

Question

Quizplus · Accepted Answer

All of the above factors, pets, carpets, and airtight windows, contribute to the rising rates of asthma in developed countries. Pets such as dogs and cats can trigger allergic reactions and asthma symptoms in some people, while carpets can harbor dust mites and other allergens that can aggravate asthma. Airtight windows, while helping to conserve energy, can also trap air pollutants and other irritants indoors, which can worsen asthma symptoms.

Which of the Following Is a Reason for Rising Asthma