Across
- 2. proposed a new system of organizing plant and animals
- 5. considered how organisms could evolve through mechanisms such as competition
- 7. the process of biological change by which decendants differ from their ancestors
- 8. traces of organisms that existed in the past
- 10. geologic processes that shape earth are uniform throughout time
Down
- 1. changes in landforms resulted from slow changes over a long period of time
- 3. states that natural disasters have happened during earth's long history
- 4. a group of organisms that are closely related and can mate to produce fertile offspring
- 6. discussed ideas about relationships among organisms, sources of variation, and the possibility of evolution
- 9. presented evolution as occurring due to environmental changes over a long period of time