Unit 2 Puzzle

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Across
  1. 2. all living things on earth
  2. 4. oxygen is present
  3. 6. site of steps 2 and 3 of aerobic cellular respiration
  4. 9. substances created during a chemical reaction
  5. 13. all the water on the earth
  6. 14. all the gases surrounding earth
  7. 16. type of organism that can make its own food
  8. 17. organelle, site of photosynthesis
  9. 18. two types, second step of anaerobic respiration
Down
  1. 1. adenosine diphosphate
  2. 3. type of organism that must eat other organisms
  3. 5. all rocks/soil on earth
  4. 6. anything with mass and takes up space
  5. 7. types of organism that breaks down biotic compounds, recycler
  6. 8. first step of aerobic respiration
  7. 10. substances at the beginning of a chemical reaction
  8. 11. process of using light energy to move glucose
  9. 12. nutrient, used in proteins and nucleic acids
  10. 15. adenosine triphosphate
  11. 17. pigment in chloroplasts