Vocabulary Review: The Nonliving Environment (from the Vocabulary list)

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Across
  1. 5. the air surrounding Earth; made up of 78% nitrogen, 21 % oxygen, and .03% carbon dioxide
  2. 7. the process that takes place when a liquid changes to a gas
  3. 8. a model explaining how carbon molecules move between the living and nonliving world
  4. 9. the process that takes place when a gas changes to a liquid
  5. 10. the height above the ground or other surface, such as sea level
  6. 12. the process in which producers make energy-rich nutrient molecules from chemicals
  7. 13. a mixture of mineral and rock particles, remains of dead things, air, and water that forms the topmost layer of Earth's crust and supports plant growth
  8. 14. in plants, the process used to produce energy for plant growth; plants use sugars produced during photosynthesis plus oxygen, or use nutrients from soil, to form energy
  9. 16. a series of organisms that are interrelated in their feeding habits--the smallest organism is fed upon by a larger one, which in turn is fed upon an even larger one, etc.
Down
  1. 1. the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water
  2. 2. a model that shows the amount of energy available at each feeding level in an ecosystem
  3. 3. the average weather conditions of an area over time, including wind, temperature and rainfall or other types of precipitation such as sleet or snow
  4. 4. a model explaining how water moves from Earth's surface to the atmosphere and back to the surface through evaporation, condensation, and precipitation
  5. 6. the process in which some types of bacteria in the soil change nitrogen gas into a form of nitrogen that plants can use
  6. 11. a model that shows the complex feeding relationships among organisms in a community
  7. 15. the distance of a place, north or south of the equator, usually expressed in degrees and minutes