Across
- 2. It helps join things
- 3. Machine with wheet and teeth
- 5. Name for kind in Egyptian civilization
- 7. Flat surface with one end higher than the other
- 9. Component of ecosystem
Down
- 1. Cutting of trees
- 2. Medium for gorwing food
- 4. Makes lifting with rope easier
- 6. Joint that allows movement in one direction
- 8. State of matter