Biology

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