Across
- 4. a diagram that shows the relationships between species
- 7. the study of fossils
- 8. the quality or state of having many different forms, types, ideas, etc.
- 9. the permanent disappearance of species from Earth
- 10. the natural process or result of being slowly broken down or decomposed, chiefly bacteria or fungi
Down
- 1. the study of the structures of organisms and their parts
- 2. when organisms are descended from a single ancestor
- 3. to change the frequency of alleles in a population over time
- 5. the mineralized remains of organisms showing long dead organisms lived and their bodies were structured
- 6. the formation of fossils as stone replaces decaying tissues