Across
- 4. things arranged in an orderly way
- 5. the process of natural changes that take place during the life of that organism
- 9. studied chimpanzees in their natural environment
- 10. the science of life
Down
- 1. the reaction to a stimulus
- 2. the production of offspring
- 3. is part of the environment and causes the organism to react
- 6. has at least one characteristic of life
- 7. any inherited characteristic that results from changes to a species over time
- 8. a group of organisms that can breed with one another and produce fertile offspring
- 11. the addition of mass to an organism