Crossword Puzzles General Knowledge No.5

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