Biology puzzle

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Across
  1. 2. Having two identical alleles of a gene
  2. 7. The process of making an extra copy of something
  3. 8. Organisms that break down dead Organisms
  4. 10. allowing pesticides to survive
  5. 11. A nuclear acid found inside of cells that hold genetics
  6. 14. A tread-like structure located inside the nucleus
  7. 15. An organism's complete set of genes
  8. 16. requiring air or oxygen for life or survival
  9. 19. Fishing to the point there is no more fish
  10. 21. The movement of carbon between the atmosphere
  11. 23. cell A cell that divides to produce new cells
  12. 24. The observable characteristics of traits
  13. 25. A group of organism that can produce fertile offspring
  14. 27. camouflage blending into the environment
  15. 28. Lack of water
Down
  1. 1. The large- scale cleaning or destruction
  2. 3. The ability of an organism to continue living
  3. 4. Copy
  4. 5. One of the alternative forms of a gene
  5. 6. The arrangement of the parts of something complex
  6. 8. cell A cell formed as a result of cell division
  7. 9. When more people are born the the world could take
  8. 12. Movement of nitrogen between the atmosphere
  9. 13. Having two different alleles of a gene
  10. 15. The warming of the environment in places
  11. 17. An organisms role and position within its ecosystem
  12. 18. Have different evolutionary backgrounds
  13. 20. The chemical breakdown of a substance
  14. 22. Raw materials that react with one another
  15. 26. Genetic information flows in one direction