Question

III. Mark T for true and F for false statements.

1. During inhalation, our stomach goes back as diaphragm expands.
2. When we breathe out, the ribcage relaxes, making the chest to move down.
3. Air is a visible mixture of gases.
4. Pure air has less oxygen than impure air. 5. We can see smoke but not air.
6. Air expands on cooling.
7. We should cover our face and nose with a handkerchief, when we sneeze or cough. ​

Answer 1

Answer:

1.F

2.T

3.F

4.F

5.T

6.F

7.T

Answer 2

Answer:

1.False

2.True

3.False

4.False

5.True

6.False

7.True

Explanation:

Mark me brainliest pls