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Across 4. wild land that has not been touched by human hands (in a negative alteration) 9. natural system 11. a section saved for a specific group 13. resources that are from natural production like forests, oceans, etc. 17. a system where goods are bought, sold, traded 20. different zones like desert, tundra, grasslands, etc 22. development in suburban sprawling areas 24. a long period of time when an area doesn't get enough water supply 25. semi dry land with little vegetation and shrubs 27. a community with living organisms 28. a method to control certain pests and other living things 29. when an area starts become desert like: arid, dry, loss of water, etc. 30. a park protected by a particular group of activists 31. reports to tell the public of the pros and cons from an environmental decision

Down 1. an American, scientific agency that monitors landscapes, natural hazards, etc. 2. dead, biological matter from either vegetation or animals 3. the process of sediments compacting 5. physical items produces from an ecosystem 6. services produced from an ecosystem 7. the line parallel to the equator 8. the natural placement of biotic and abiotic factors 10. the study of climate changes of the earth 12. local distribution 14. physical factors 15. a dry area on a mountain that doesn't get the rain thats on the other side 16. occurring natural in one place, native 18. a model to show a space that is going to be used for construction, setting up, etc 19. relating to drugs, their use, and their sale 21. a region w/lack of water therefore resulting in less vegetation 23. a special system of guides that have an intended outcome 26. average weather condition calculation of humidity, wind, etc.