Across
- 2. medical doctor
- 7. one of a number of things from which only one can be chosen
- 10. modern
- 11. Relating to the branch of medicine dealing with children and their diseases.
- 12. the industry that makes vehicles that travel in the air and in outer space
- 13. the growth of cities
- 14. becoming larger
Down
- 1. producing more than product
- 3. scientists who study human populations
- 4. growth to a global or worldwide scale
- 5. to make easier
- 6. a series of U.S. missions to the moon; proved that humans can live and work in space.
- 7. the science or practice of travel through the air
- 8. something new
- 9. lowest point