2. Air contains dust particles

3. A paper kite needs air to _______________

4. An inflated balloon is full of __________.

5. Vehicles give out smoke and _____________ into the air when they burn fuels.

6. Forest fires produce smoke and dust. This can cause __________

7. We share the air we breathe. we must take care of it and _____________ .

8. We have plant more trees, because it give us _____________

9. Air pollution can be reduce by _____________

10. The diver and the astronaut breathe in air from air tanks