Question

III. Complete the passage with the help of clues.
Gases, oxygen, three, argon, Colourless, 0.04%, 21%, atmosphere.

Air is a mixture of _______
It contains ___________
main gases nitrogen, _________ and carbon dioxide.
Nitrogen constitutes more than three fourth of the ___________
(which is 78% of air by volume). It is a ______ and
odourless gas. Oxygen constitutes _________
and carbon dioxide constitutes
of the atmosphere. Apart from these, air also contains gases like neon, _________ and water
vapour, dust and smoke.​

Answer 1

Answer:

1. gases

2. atmosphere

3. Oxygen

4. atmosphere

5. colourless

6.21%

7. Argon

Brainlies pz.

Explanation:

Answer 2

Answer:

Explanation:

1. gases

2. atmosphere

3. Oxygen

4. atmosphere

5. colourless

6.21%

7. Argon