Across
- 2. something that takes the place of another
- 4. abstract ideas or theories
- 7. widespread, common, or overall
- 9. significant discoveries or advancements
- 11. currently present or in existence
- 12. based on testing or trial and error
- 13. handle or control, often with the intention of organizing or supervising
- 15. societies with advanced culture, technology, and organization
Down
- 1. a guide or instructions provided in a book or document
- 3. followed or obeyed, usually rules or instructions
- 5. extended or distributed over an area
- 6. creative and innovative
- 8. the act of staying alive or continuing to exist
- 10. looking for or searching for something
- 14. created by human effort, not natural