environmental systems B

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Across
  1. 2. the number of live births per thousand of population per year
  2. 4. is surface runoff of precipitation created by urbanization.
  3. 8. allows genes to be transferred from one bacterium carrying the factor to another bacterium lacking the factor by conjugation
  4. 9. the act of leaving one's own country to settle permanently in another; moving abroad
  5. 10. a substance that pollutes something, especially water or the atmosphere
  6. 13. capable of being decomposed by bacteria or other living organisms.
  7. 17. is a coupled ocean-atmosphere phenomenon that is the colder counterpart of El Niño
  8. 18. a layer in the earth's stratosphere at an altitude
  9. 19. the natural home or environment of an animal, plant, or other organism
  10. 20. all the inhabitants of a particular town, area, or country
  11. 21. the number or quantity of people or things that can be conveyed or held by a vehicle or container
  12. 23. a variable of a system that, causes a noticeable change in output or another measure of a type of system
  13. 24. the weather conditions prevailing in an area in general or over a long period.
  14. 25. the regions of the surface, atmosphere, and hydrosphere of the earth (or analogous parts of other planets) occupied by living organisms.
Down
  1. 1. the process of making an area more urban.
  2. 3. any of the almost spherical concentric regions of matter that make up the earth and its atmosphere, as the lithosphere and hydrosphere
  3. 5. the ratio of deaths to the population of a particular area or during a particular period of time
  4. 6. the envelope of gases surrounding the earth or another planet.
  5. 7. fog or haze combined with smoke and other atmospheric pollutants
  6. 11. a gradual increase in the overall temperature of the earth's atmosphere generally attributed to the greenhouse effect caused by increased levels of carbon dioxide
  7. 12. the action of clearing a wide area of trees.
  8. 14. the action of coming to live permanently in a foreign country
  9. 15. an irregularly occurring and complex series of climatic changes affecting the equatorial Pacific region and beyond every few years
  10. 16. a colorless unstable toxic gas with a pungent odor and powerful oxidizing properties
  11. 22. are hardy species which are the first to colonize barren environments