enviormental systems b

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Across
  1. 6. a gradual increase in the overall temperature of the earth's atmosphere
  2. 7. the number of live births per thousand of population per year
  3. 9. a cooling of the water in the equatorial Pacific, which occurs at irregular intervals, and is associated with widespread changes in weather patterns
  4. 10. the natural home or environment of an animal, plant, or other organism
  5. 12. the regions of the surface, atmosphere, and hydrosphere of the earth
  6. 16. an irregularly occurring and complex series of climatic changes affecting the equatorial Pacific region and beyond every few years
  7. 17. the ratio between the number of live births in a year and the whole female population of childbearing age
  8. 18. the ratio of deaths to the population of a particular are
  9. 20. any of a class of compounds of carbon, hydrogen, chlorine, and fluorine, typically gases used in refrigerants
  10. 21. a colorless unstable toxic gas with a pungent odor and powerful oxidizing properties
  11. 22. surface runoff of rainwater created by urbanization
  12. 23. the action of clearing a wide area of trees
  13. 24. weather conditions prevailing in an area in general or over a long period
  14. 25. fog or haze combined with smoke and other atmospheric pollutants
Down
  1. 1. the process of making an area more urban
  2. 2. system that causes a noticeable change in output or another measure of a type of system
  3. 3. the number or quantity of people or things that can be conveyed
  4. 4. any of the almost spherical concentric regions of matter that make up the earth and its atmosphere
  5. 5. a substance that pollutes something, especially water or the atmosphere
  6. 8. the envelope of gases surrounding the earth or another planet.
  7. 11. moving permanitly to one place
  8. 13. all the inhabitants of a particular town, area, or country
  9. 14. (of a substance or object) capable of being decomposed by bacteria or other living organism
  10. 15. human-created underwater structure, typically built to promote marine life in areas with a generally featureless bottom
  11. 19. the act of leaving one's own country to settle permanently in another