BIOLOGY

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Across
  1. 4. the ''Golden age'' of fishes
  2. 8. Is a group of related classes
  3. 10. Mammals successfully colonized all environments
  4. 11. This is the highest and most comprehensive level of classification
  5. 14. As development continuoes form embryo to a more mature organism
  6. 17. Is a group of related species
  7. 18. Amino acids are the basic building blocks of ___
  8. 19. This is the branch of science that names and groups organism
  9. 21. When the evolution of one species affects the evolution of another species
  10. 23. It is a person who study biology
  11. 24. Are layers of calcium carbonate that form in warm, shallow seas
  12. 26. Gathered into larger clusters to make plants
  13. 27. Is a group of families
  14. 28. The process of the evolution of anew species
  15. 29. The age of dinosaurs
  16. 30. Change in population over time
Down
  1. 1. This is a natural and important part of evolution
  2. 2. The genetic makeup of an individual
  3. 3. It stands for deoxyribonucleic acid
  4. 5. Process whereby plants use light energy to cause carbon dioxide to react with water
  5. 6. Evidence for evolution
  6. 7. The idea that species originate through a gradual change of adaptions
  7. 9. Bones and other hard parts are replaced by minerals
  8. 12. Horses and elephants
  9. 13. Changes in the gene pool of a population that result in changes in allele frequencies
  10. 15. The generation of major change in the assemblage of organism
  11. 16. The traits of an individual
  12. 20. He grouped everything into simple groups such as animals or plants
  13. 22. Is a group of related orders
  14. 25. the ''Golden age'' of cephalopods