Across
- 2. noun from the verb 'donate'
- 3. noun from the verb 'play'
- 4. noun from the verb 'reduce'
- 5. someone who studies physics
- 10. noun from the verb 'alter'
- 11. verb from the adjective 'pure'
- 12. noun from the verb 'pollute'
Down
- 1. noun from the verb 'complicate'
- 6. noun from the verb 'teach'
- 7. adjective from the verb 'wash'
- 8. noun from the verb 'admit'
- 9. noun from the verb 'enjoy'