Evolution

12345678910
Across
  1. 5. an early stage of development in organisms
  2. 7. used to determine the age of the rocks
  3. 9. structures from different species wich have similar internal framework
  4. 10. the study of similarities and differences in the anatomy of different species
Down
  1. 1. a famous scientist
  2. 2. the gradual development of something, especially from a simple to a more complex form.
  3. 3. features of different species that are similar in function
  4. 4. traces of organisms in the past
  5. 6. one who studies fossils
  6. 8. splitting in ancestral population into two or more