Across
- 1. anything that has or once had all the characteristics of living organisms.
- 5. arranged in an orderly way.
- 6. the natural changes that take place during the life of an organism.
- 8. a group of organisms that can breed with one another and produce fertile offspring.
- 10. the reaction to a stimulus.
Down
- 2. the production of offspring.
- 3. a person who studies biology
- 4. anything in either environment and causes a reaction by the organism.
- 7. the science of life.
- 9. the addition of mass to an organism and the formation of new cells.