biology

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Across
  1. 4. like the brain of a cell
  2. 7. differences
  3. 9. species that can interbreed
  4. 10. amino acid
  5. 12. a flaw in the making of an organism
  6. 13. small and makes up organisms
  7. 14. life on earth
  8. 15. physical characteristics
Down
  1. 1. makes up a person
  2. 2. can be harmful or not harmful in the body
  3. 3. made of ribose
  4. 5. made of deoxiribose
  5. 6. abiotic and biotic things all together
  6. 8. nonliving things
  7. 11. living things