Across
- 2. Contamination that harms the environment
- 4. Weather conditions over a long perio
- 6. Meeting today's needs without harming the future
- 7. Substances used to construct buildings
- 8. Fresh air moving through a building
- 13. Keeping a building at a lower temperature
- 14. Able to be replaced by nature
- 15. Power used in buildings and daily life
Down
- 1. The process of building structures
- 3. Natural light from the sun
- 5. The total usable life of a building
- 9. The natural world around us
- 10. Material that prevents heat loss
- 11. Able to be processed and used again
- 12. Materials and energy from nature