Across
- 1. Where gaseous exchange takes place.
- 3. The number of times we breathe in one minute
- 5. To condition the inhaled air to be warmer before entering the lungs is the function of___
- 7. A process which releases energy from the food we eat.
- 8. The part that connects the nose and the lungs.
- 9. Several people are trapped in a lift for some time. There is no fresh air entering the lift during this period of time. The amount of_____will decrease
Down
- 2. Limewater can be used to test the presence of ________ in the air.
- 4. When we exercise, our breathing rate_____
- 6. The system of our body that helps us to breathe