Photosynthesis, Respiration, and Carbon/Nitrogen Cycle Crossword Puzzle

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Across
  1. 5. part of the plant where respiration generally occurs
  2. 8. part of the plant where photosynthesis generally occurs
  3. 11. the process by which cells use oxygen to break down sugar and obtain energy
  4. 13. bacteria that can convert the ammonium to nitrates and nitrites
  5. 15. the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar
Down
  1. 1. Nitrogen is fixed by these bacteria into a form of nitrogen known as ammonia and ammonium
  2. 2. gasses in the atmosphere that trap heat and warm up the planet
  3. 3. molecules that contain carbon
  4. 4. organisms that use light energy from the sun to produce their own food
  5. 6. organisms that cannot use the sun's energy to make food
  6. 7. Reactant of photosynthesis that plants get through the ground
  7. 8. gas molecule in the atmosphere that's taken in by organisms that perform photosynthesis
  8. 9. the process by which decomposers return ammonia back into the soil when both plants and animals decompose
  9. 10. a source of carbon in the earth's crust that's formed from the remains of organisms that lived a long time ago
  10. 12. bacteria that converts nitrates and nitrites back into atmospheric nitrogen gas
  11. 14. energy rich molecule produced during cellular respiration for cells to do work