Evolution 2025

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Across
  1. 1. Earth is broken down into 12 major time ________ based on the organisms that existed at the time and major geologic events that occurred;
  2. 6. Similar Structures in different animals that indicates a common ancestor; example human arm and whale flipper
  3. 7. the slow change in a species over time driven by natural selection and mutation
  4. 10. a group of organisms that share similar characteristics and can reproduce amongst themselves
  5. 13. The study that draws conclusions based on the physiology and morphology of animals
  6. 14. Differences amongst members of the same species; necessary for Natural Selection
  7. 16. A change in a gene leading to a change in an organism
  8. 17. If an animal cannot adapt to it's environment, every one in the population will die out and the species will go
  9. 19. Structures like butterfly and bird wings that have the same function, flying, but much different structure
  10. 21. Aspect of natural selection where an organisms produces more offspring than could possibly survive
  11. 23. Diagram showing showing the evolutionary relationships between different organisms
Down
  1. 2. This life process aids in evolution by combining the genes of two different parent organisms
  2. 3. An organisms surroundings, including the living and nonliving aspects
  3. 4. States that in undisturbed rock layers, older rocks will be found under the younger rocks
  4. 5. When two organisms are purposely mated to gain a desirable trait; Labradoodle is hypoallergenic from being part poodle and smart because its also a labrador Retriever e
  5. 8. The study of structures and functions of the developing embryos of vertebrate animals
  6. 9. Structures that seem to have no function in a present animal, such as wisdom teeth and appendix, but may have had a use in their ancestor
  7. 11. Earth's time has been broken down into four main _____; Precambrian, Paleozoic, Mesozoic, Cenozoic
  8. 12. a process which causes a species to change over time by favoring organisms that are best adapted to their environment
  9. 15. A Record that divides history based on the type of organisms that existed during different time periods
  10. 18. any feature or behavior exhibited by an animal that helps it survive in its environment
  11. 20. Physical adaptation where an animal blends into the background of their environment
  12. 22. because these microorganisms reproduce super fast, they will go through evolution and natural selection the fastest