Across
- 3. links to modern species
- 5. similar structure function in similar environments
- 8. similar anatomy from common ancestors
- 9. when populations or organisms change over time
- 10. remains or traces of organisms in the past
Down
- 1. geographic distributions of a species
- 2. study of fossils
- 4. similar DNA and amino acid sequences
- 6. found at a certain geographic location and nowhere else
- 7. characteristics in related species can have underlying similarity even though functions may differ