Biology

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Across
  1. 4. Mechanical chewing of food
  2. 5. Rhythmic contraction and relaxation of muscles
  3. 6. Tine openings on leaves for exchange of gasses
  4. 10. Movement of materials inside organism
  5. 11. Basic unit of life
  6. 12. Process of cell engulfment
  7. 13. Removal of waste products
  8. 14. Process of taking in oxygen and releasing carbon dioxide
  9. 15. Tiny air sacs where oxygen is absorbed
  10. 16. Green Pigment in plants
Down
  1. 1. Breakdown of food in body
  2. 2. Essential life process for energy
  3. 3. Natural home of an organism
  4. 7. Transport of food in plants
  5. 8. Oxygen carrying pigment in blood
  6. 9. Movement from high to low concentration