Evidence of evolution

Edit Answers
1234567891011121314151617181920212223242526272829303132333435363738
Across
  1. 3. isotope unstable form of an elemental atom
  2. 7. Result of natural selection
  3. 10. Shed from body
  4. 12. DNA, mtDNA. DNA found in cell’s powerhouse
  5. 13. Complete set of genetic material
  6. 14. An ancient landmass made up of North America, Europe and Asia
  7. 17. Photosynthetic microorganisms
  8. 18. species or group of species
  9. 20. Important period of time
  10. 22. dating techniques used to estimate the actual age of rocks and fossils
  11. 26. time it takes for half the radioactive atoms in the substance to decay
  12. 27. Estimating the age of rocks or fossils in (millions of) years
  13. 28. An ancient landmass made up of South America,Africa,Antartica,Australia and India
  14. 30. common ancestor structures of different organisms are very similar
  15. 31. time history of Earth broken down into huge time pieces
  16. 32. Organisms that can mate and reproduce
  17. 37. 4Layers of sediment are compressed and glued together by chemical reactions and pressure
  18. 38. A type of fossil that forms when an organism leaves an imprint in rock
Down
  1. 1. record collection of all the different types of fossils found, the species they represent and the order in which the species appear in the geological time scale.
  2. 2. morphology Comparing structures of two different species
  3. 4. change in heritable characters of a population or species over time
  4. 5. process of forming a fossil from a living organism
  5. 6. preserved remains or impression of an organism that is no longer extant
  6. 8. study of where in the world plants and animals live.
  7. 9. Study of genome
  8. 11. Scientific study of how living organisms produce,transmit and receive sound.
  9. 15. tree evolutionary history
  10. 16. all of the land masses on Earth were joined together in a single, huge supercontinent
  11. 19. Parts of body that are leftover from ancestors
  12. 20. Studies how embryo develops
  13. 21. age
  14. 23. Science of sorting and understanding the relationship between living things
  15. 24. Large span of geological time
  16. 25. All the members of a clade, including the common ancestor shown in a diagram
  17. 29. A specific block of time in Earth’s history
  18. 33. Sedimentary rock forms in layers
  19. 34. fossil Fossils of a known age and type
  20. 35. Old rock formations
  21. 36. fossil the preserved impressions of an organism that take the form of footprints, burrows or coprolites (fossilised faeces).