Across
- 2. → Process of change in living organisms over time.
- 3. → Advanced stage of human social development.
- 5. → Study of populations and statistics.
- 8. → Government where power rests with elected representatives.
- 10. → Relating to stars, planets, or outer space.
- 12. → Study of living organisms.
- 15. → Scientist who studies ancient human remains and artifacts.
- 16. → Science of matter, energy, and motion.
- 17. → Science of space travel and exploration.
- 18. → Community of organisms interacting with environment.
- 19. → Science of substances and their reactions.
- 20. → Sudden change in political or social systems.
Down
- 1. → Introduction of new ideas or methods.
- 4. → Development of industries in a country.
- 6. → Government system ruled by the people.
- 7. → Worldwide integration of economies and cultures.
- 9. → Period of cultural rebirth in Europe.
- 11. → Thinker who studies ideas about existence and knowledge.
- 13. → Abstract science of numbers and shapes.
- 14. → Government led by a king or queen.