Across
- 1. knowledge obtained by experimentation
- 5. study of life
- 6. father of genetics
- 7. energy molecule for cell
- 8. Origin of Species author
- 10. responds to stimulus
Down
- 2. ___ anatomy helps identify evolutionary relationships
- 3. the earth is 4.5 _____ year old
- 4. maintain an internal environment
- 9. genetic change over time