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Across 8. weather conditions, global warming 10. HABITAT 11. "wealthy by inheritance but saving by constitution"- Ellen Glasgow 12. the most favorable environment for a plant or animal; "water is the element of fishes" 14. low land, seasonally flooded 17. mud or clay or small rocks deposited by a river or lake 19. contamination of the air, water, or soil with substances that can cause harm to human health or the environment 21. depletion, corrosion 24. guard from attack 25. the process of minimising waste by recovering materials and transforming them into new products

Down 1. "the spotted owl is a threatened species, not yet an ____________ one" 2. supportable, viable 3. treat with nitric acid, so as to change an organic compound into a _________ 4. the area in which something exists or lives 5. of a device, to be driver by power derived from sunlight 6. a low area where the land is saturated with water 7. seasonal ___________ bird 9. slow passage of a liquid through a filtering medium; 12. water company 13. the central building block at the top of an arch or vault 15. the condition of not containing or being covered by a liquid 16. cut, hex, doom 18. has poorer drainage than a swamp 20. reduced to the simplest and most significant form possible without loss of generality 22. element, atomic number 8 23. planting ground