Across
- 5. solar, The use of the sun's energy for heating and cooling
- 6. Capable of being slowly destroyed and broken down into very small parts by natural processes
- 8. To provide with new parts that were not available before
- 9. To get a usable material from materials that have been used
- 11. mass, The ability of an object to absorb and store heat energy
- 12. island, An area that is warmer than its surrounding rural areas
- 13. roof, A roof of a building that is covered with vegetation
Down
- 1. Able to be used without being completely used up
- 2. The act or process of building something
- 3. energy, Energy that is able to be renewed
- 4. cycle, A hydro logic cycle
- 7. To use something again
- 9. earth, A technique for building walls using raw materials
- 10. The act of making someone healthy again after an illness