Across
- 1. Resistance, current, voltage
- 4. Protecting and restoring the natural environment
- 5. Provides information in an entertaining way
- 8. The breakdown of environmental pollutants by microorganisms
- 9. A device that converts a voice or image into a signal that can be transmitted
- 10. Any product or physical matter that comes from plants, animals, and metals
- 12. The behaviors and properties of light
- 13. The use of living systems and organisms to develop or make useful products
- 14. Modifying organisms for a specific purpose
- 18. casting back light without absorbing it
- 19. Data that has been sorted and arranged
- 20. Individual facts, statistics, and ideas
Down
- 2. Development of stone tools for preparing food and hunting
- 3. The making of products with machinery
- 6. The exchange of information between people as a means of connection
- 7. A system that filters water
- 11. The chemical breakdown of a substance by microorganisms
- 15. Deflecting or changing the direction of light
- 16. The process of changing the shape of a material without cutting it
- 17. The person or machine that is communicating