Across
- 4. An inherited trait that results from change to a species over time
- 6. An organism's internal regulation to keep it alive
- 7. The science of life
- 8. The production of offspring
- 10. The addition of mass in an organism
- 12. Something that causes a reaction in a living thing
Down
- 1. ________ of life
- 2. A group of organisms that can breed and create fertile offspring
- 3. Arranging in an orderly way; a characteristic of living organisms
- 5. A reaction to stimulus
- 9. A living thing
- 11. Building block of life