Across
- 1. — the ability of natural rubber to be used in many different ways.
- 5. — operated or filled with air or gas under pressure.
- 6. — the entry of something unwanted or harmful into an area.
- 8. — made by chemical processes, not naturally occurring.
- 9. — the process of becoming worse in condition or quality.
Down
- 2. — free time for enjoyment and relaxation.
- 3. — the unintended escape of liquid or gas through a material.
- 4. — to make something steady or maintain it at a certain level.
- 7. — existing or happening over a large area or among many people.
- 8. — to rise quickly to a high level.