Across
- 4. contrast, change
- 7. How far an object moves
- 9. doing something in a way that saves you time and energy
- 10. anything that happens
- 11. straight
- 12. Tool or piece of equipment
- 15. necessary
- 16. A research method, test
- 17. grow
- 18. green
- 19. research
Down
- 1. quickly and accurately
- 2. including a lot of information
- 3. problem, hardship
- 5. skilled
- 6. basically
- 7. a small part of something
- 8. growth
- 11. in a clear way
- 13. indeed, still
- 14. outer point
- 17. to show