Across
- 2. metabolism
- 5. a chemical reaction
- 7. from the environment outside the organism
- 8. the study of life
- 11. a response to a signal
- 12. between living and non living things
- 13. reproduction having a baby
Down
- 1. single cells dividing repeatedly
- 3. genetic code
- 4. maintaining internal conditions
- 6. transition
- 9. inside the organism
- 10. every living thing has them
