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Across 1. struggle created by community resources, not owned by anyone 4. A money payment or other form of aid that the government gives to a person or organization. 8. methods by which humans take care of the soil 10. science dealing with the relation of living things to their environment and to each other 12. responsibility for conserving and restoring the Earth's resources for future generations 13. a situation in which there are too many people in a given area 15. resources and information from the environment entering a system 17. disaster that struck the US in the 1930s; an area of land suffering from severe erosion Economic: related to buying and selling of goods and services (adjectives) 18. isolated systems increase in entropy; disorderly equilibrium 21. a sudden, terrible event (noun) 22. ENSO 24. proportional reflectance of Earth's surface 27. Warm, wet and multi-layered 31. The atmosphere from Earth's surface to the stratosphere 32. compounds that do not contain carbon 36. Dry, bare ground and some vegetation 38. A major surface wind that blows more or less continually. 42. have low rates of population growth and are highly industrialized 43. the natural shaking of the earth’s crust 46. form when hot liquid (magma/lava) cools and hardens 48. Trees enter a dormant state during the winter 49. tendency of moving air or water to be deflected from its path; rotational force 51. top layer of soil; rich in nutrients necessary for plant growth 52. Gradual destruction, as by burning, eating, etc., or by using up, wearing out 55. states that energy cannot be created or destroyed but can be changed from one form to another 57. are the sources of most of the earth's crust 58. plant or animal that plays a unique and crucial role in the way an ecosystem functions 60. the continuous movement of water between ocean, atmosphere and land

Down 1. Wet, coastal area with coniferous trees 2. small particles of decayed plant and animal material found in soil 3. minerals that can be used and replaced over a relatively short time period 5. cycling of matter between organisms and parts of the biosphere 6. a developing country with a low level of industrialization 7. A heterotroph that derives its energy from nonliving organic material 9. the thinnest and outermost layer that surrounds the earth 11. Pertaining to life; environmental factors created by living organisms 14. Enough rain for plants but not trees 16. Can be either alpine or arctic 19. using and maintaining resources for future use 20. resources that cannot be replaced once they are used 23. the amount of resources needed by an individual 25. change in condition triggers a response that reverses the changed condition 26. change in a condition that causes further change in the same direction. 28. development that can be maintained without depleting resources 29. Trees stay green year round 30. the rate at which energy is produced in an ecosystem 33. A circular, prevailing wind that generates circular ocean currents. 34. Broad leaves are shed in winter 35. hot pliable layer surrounding and less dense than the core 37. the ecological "job and address" of a plant or animal in nature 39. the analyzing of potential effects of doing nothing or of intervening 40. system formed by interaction of a community of organisms with their physical environment 41. The layer of the atmosphere between the troposphere and the mesosphere 44. costs carried by 3rd parties(pollution) - someone or something not originally invovled 45. interior composed of dense, intensely hot metal, generates a magnetic field around earth 47. nonliving, physical features of the environment; air, water, sunlight, soil, temperature, and climate 50. general term for rapid down-slope movement of soil or rock 53. are seismic sea swells that accompany oceanic and costal landslides and earthquakes 54. remains of organisms that were buried by sediments and became part of the rock 55. when rock layers are cracked 56. community of living organisms of a single major ecological region 59. made of weathered rock, organic matter, water, and air