Across
- 3. the gases sent into the air by cars factories and power plants
- 5. a rounded shape that something can pass through
- 6. a thing used to hold things together
- 8. the thing that something is made from
- 10. a curved piece that catches and holds something
- 11. the animals that live in nature and not with people
Down
- 1. the part of a device through which sound is heard
- 2. a place by the sea where ships stop
- 4. a tool that is used to see very small things
- 7. a structure built to protect the land from the ocean waves
- 8. an empty shape used to make something
- 9. a long hollow shape that is open at both ends