Question

3.
(a) oxygen
Vet carbon dioxide
(b) nitrogen
(d) water vapour
Vart oxygen
(b) carbon dioxide
(d) smoke
(c) dust
5. Diseases like asthma, bronchitis etc. are caused due to
(a) polluted water
(c) deficiency of minerals
(b) polluted air
(d) lack of food
The component of air that cannot be used directly by the living b
4. The component of air that helps in burning, is​

Answer 1

Answer:

Chronic bronchitis, which is longer lasting, can be triggered by long-term exposure to environmental irritants such as tobacco smoke, dust, or chemicals. Asthma is an inflammatory condition that leads to tightening of the muscles around the airways and swelling that cause airways to narrow.

Explanation:

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