Across
- 1. process that results in mass being added to an organism
- 3. production of offspring
- 5. anything that has or once had all these characteristics
- 6. changes an organism undergoes in its lifetime before reaching its adult form
- 7. enabling the species to survive
- 9. regulation of an organism's internal environment to maintain conditions needed for life
- 10. the science of life
- 11. group of organisms that can interbreed and produce fertile offspring
Down
- 2. organism's response to a stimulus
- 4. orderly structure shown by living things
- 8. any change in an organism's internal or external environment that causes the organism to react