4. To use again (USEER) 5. A large number of water covering an area. (DLOFO) 6. Keeping someone safe from injury, harm, or destruction. (SEVERREP 7. Nurturing and caring the ecosystem. (TECTORP) 8. The process where soil is wom away. (SIONORE) 9. To make something new from used item (CYCLEER) 10. Keeping something from being wasted (VESA)