Across
- 2. to study something
- 6. never changes
- 7. to test something
- 8. to save the results
- 9. it relies on scientific changes
- 10. what the results are
Down
- 1. the action or process of observing something or someone carefully or in order to gain information.
- 3. starting point
- 4. progress for studing
- 5. something to purposeless change