Across
- 5. How a species or organism changes over time
- 7. Genetic code
- 8. Reproduction that only requires one life form
Down
- 1. The way an organism regulates its body
- 2. Reproduction that requires two life forms
- 3. Science that studies living things with the scientific method
- 4. A signal to which an organism responds
- 6. The process of chemical reactions as a life form carries out its life processes