Across
- 2. The study of human populations
- 6. A system of beliefs about God or gods
- 7. A system of communication used by people
- 8. The number of people living per square mile or area
Down
- 1. The physical features of Earth that affect where people live
- 3. A group of people who share common culture, language, or ancestry
- 4. The average number of years a person is expected to live
- 5. The total number of people living in an area