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).

Q. When pollutants mix with other gases in the air, dust and smoke, a is created.

Q. Air is a mixture of many gases, dust particles and water vapour.

Q.

When we inhale, we take air into our lungs. what do we breathe out during exhalation? options A :carbon dioxide option B: Nitrogen option C:Oxygen option

D: a mixture of gases that has more carbon dioxide than inhaled air optionE: a and c

Q. Name the following.
(a) Constituents of the biosphere
(b) Biotic constituents of soil
(c) Fossil fuel
(d) Inert gases in air
(e) Gases that are harmful to the ozone layer

Q. When we inhale air, the incoming dirt and dust particles sticks to a sticky layer called .