Chapter 1 Vocabulary

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Across
  1. 4. a swelling on a plant root that contains nitrogen-fixing bacteria
  2. 6. process in cells that cause oxygen and glucose to produce energy and carbon dioxide
  3. 8. precipitation that is more acidic than normal rain water
  4. 13. Another name for LIVING Organisms
  5. 14. pollution released into the atmosphere
  6. 15. conversion of nitrogen in the atmosphere to a form that can be used by plants
Down
  1. 1. what prcoess cycles chemical elements through the living and nonliving parts of an ecosystem
  2. 2. a source of energy formed from dead plants and animals
  3. 3. brown smog produced when air pollutants react with sunlight
  4. 5. Precipitation that flows over the surface of soil
  5. 7. plant that hosts nitrogen-fixing bacteria in nodules on its roots
  6. 9. process that releases nitrogen from soil back into the atmosphere
  7. 10. process in which plants convert light, water, and carbon dioxide into sugars
  8. 11. the process that gathers precipitation into a body of water
  9. 12. Another name for NON LIVING organisms