Biology 20 Review

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Across
  1. 4. features/wisdom teeth, appendix, tailbone
  2. 6. features/arm of human and leg of dog
  3. 8. of the release of histamine
  4. 9. created the theory of natural selection
  5. 11. the theory of inheritance of acquired characteristics
  6. 13. bicarbonate ions
  7. 14. site for the krebs cycle
  8. 15. polar molecule
  9. 16. photosynthesis
  10. 18. of the heart, during which blood is pushed out the heart
  11. 19. of the heart, during which the atria fill with blood
  12. 20. largest artery in the body
Down
  1. 1. reproduction/results in the most variation between offspring
  2. 2. land that drains toward a lake or other body of water
  3. 3. features/wing of insect and wing of bird
  4. 5. of evolution
  5. 7. together for blood clotting
  6. 10. of cellular respiration occurring in the cytoplasm
  7. 12. positive/universal blood recipient
  8. 13. frozen soil
  9. 17. most digestion occurs