Cycles quiz

Edit Answers
123456789101112131415161718192021222324
Across
  1. 3. Animals obtaining nutrients by eating plants.
  2. 5. Ammonia turns into nitrates.
  3. 6. Water turning into vapor.
  4. 9. Decomposers return nitrogen to soil as ammonia.
  5. 13. Plants absorb nitrates into tissues.
  6. 15. Element important for DNA, bones, ATP.
  7. 16. Rocks breaking down and releasing phosphorus.
  8. 17. Nitrates convert back into nitrogen gas.
  9. 22. The variety of life supported by these cycles.
  10. 23. Rain or snow falling from clouds.
  11. 24. Phosphorus helps build these strong body parts.
Down
  1. 1. Organisms use oxygen and release carbon dioxide.
  2. 2. Nitrogen plus oxygen compound absorbed by plants (NO3^-).
  3. 4. Plants taking phosphorus or nitrates from the soil.
  4. 7. Breakdown of dead organisms returning nutrients.
  5. 8. Water vapor forms clouds.
  6. 10. Burning fossil fuels releases carbon dioxide.
  7. 11. Genetic molecule containing instructions.
  8. 12. Plants use CO2 and sunlight to make food and release oxygen.
  9. 14. Carbon forms these molecules that build living things.
  10. 18. Energy molecule that phosphorus helps form.
  11. 19. Water gathering in rivers, lakes, and oceans.
  12. 20. Phosphorus settling in water and forming rock.
  13. 21. Bacteria convert nitrogen gas into usable forms.