Question 2

(a) The constituent of the air that contains harmful gases and dust particles is known as _.

(b) Shortness of breath and intense cough is mainly caused to the inhalation of (polluted air / fresh air).

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Solution

(a) The constituent of the air that contains harmful gases and dust particles is known as smoke.

(b) Shortness of breath and intense cough is mainly caused to the inhalation of polluted air.

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Question 2 (a) The constituent of the air that contains harmful gases and dust particles is known as _______. (b) Shortness of breath and intense cough is mainly caused to the inhalation of ______ (polluted air / fresh air).

(a) The constituent of the air that contains harmful gases and dust particles is known as smoke. (b) Shortness of breath and intense cough is mainly caused to the inhalation of polluted air.

Question 2

(a) The constituent of the air that contains harmful gases and dust particles is known as _.

(b) Shortness of breath and intense cough is mainly caused to the inhalation of (polluted air / fresh air).

(a) The constituent of the air that contains harmful gases and dust particles is known as smoke.

(b) Shortness of breath and intense cough is mainly caused to the inhalation of polluted air.