Across
- 3. to gradually develop over time
- 7. a distinguishing feature belonging to an organism
- 8. he proposed the theory of evolution by natural selection
- 9. unit that determines a particular characteristic in an organism
- 10. the preserved remains or impression of a plant or animal
Down
- 1. a set of statements or ideas intended to explain a topic or phenomena
- 2. a group of organisms that belong to the same species or are living in the same area
- 4. the ability of an organism to alter their structure or function to better suit its environment
- 5. to continue to live or exist
- 6. a difference in individual species