Unit 1 Part 2 BB

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Across
  1. 2. movement of nitrogen
  2. 3. respiration with oxygen
  3. 4. what we breath
  4. 6. what plants make for food
  5. 9. high to low concentration
  6. 12. transport that uses energy
  7. 15. carbon ____ is amount of carbon produced
  8. 17. global ____ makes the world warmer
  9. 18. how plants make food
  10. 19. transport that needs no energy
  11. 20. dioxide
Down
  1. 1. respiration without oxygen
  2. 5. ____ effect traps heat in atmosphere
  3. 7. natural movement of water
  4. 8. ____ change is a change in weather over time
  5. 10. ____ cycle (precipitation)
  6. 11. cellular _____ makes energy for body
  7. 13. ____ cycle is movement of phosphorous
  8. 14. cellular energy
  9. 16. ____ membrane protects the cell