Unit 5 Vocabulary

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Across
  1. 7. A water-soluble molecule made up of nitrogen and oxygen, commonly found in agricultural fertilizers
  2. 10. The process by which water is released from plans leaves
  3. 12. Ability of something to allow liquids to run through it
  4. 14. The process by which plants convert energy from the sun into food
  5. 16. When large amounts of nutrients enter the water and cause an increase in the amount of oxygen
  6. 17. The cultivation of aquatic organisms (as fish or shellfish) especially for food; fish farming.
  7. 19. Very small aquatic animals
  8. 20. Water that percolates through the surface and is retained in underlying rock and soil.
Down
  1. 1. Chemicals used to kill weeds
  2. 2. An area of land over which water flows to reach a common body of water such as a lake or pond
  3. 3. An underground water system made of porous rock and sand
  4. 4. A hole that is drilled into the aquifer
  5. 5. Water returning to the surface after being absorbed by the ground
  6. 6. The change in water from liquid to gas
  7. 8. A general term for small, chlorophyll-containing plants such as seaweed or pond scum
  8. 9. When precipitation is absorbed into the ground and moves down through the soil
  9. 11. Water that is released from the atmosphere as rain, snow, hail, etc.
  10. 13. Single celled algae
  11. 15. A colorless, odorless gas that is a non-metallic element which makes up almost four fifths of the air
  12. 18. Chemical substances applied to plants to keep insects away