_______ contains few gases and fine dust particles

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Solution

Dear student

Your blank will be replaced by smoke
Smoke contains few gases and fine dust particles
Dust particles are always present in air. ... The gases in air are mainly nitrogen, oxygen small amount of carbon dioxide, and many other gases.

With regards

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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	weather cock	(i)	gases and fine dust particles
b	mountaineers	(ii)	sailing yacht
c	fine hair inside the nose	(iii)	oxygen cylinders
d	smoke	(iv)	direction of air flow
e	wind	(v)	prevent dust particles

H e, C H_{4}

S O_{2}

H e, C H_{4}

S O_{2}

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