Across
- 5. nomadic people who live chiefly by hunting and fishing, and harvesting wild food
- 6. before the common era
- 8. all the things together that surround animals and humans in the natural world, including the air, water, and soil
- 10. the act or process of migrating
- 11. producing or able to produce farm crops or other plant life
Down
- 1. an advanced state of development of a society as judged by having a system of government and laws, using written language, and keeping written records
- 2. the distance on the earth's surface east or west of an imaginary line on the globe
- 3. the total number of people living in a country, city, or area
- 4. current era
- 7. the usual weather conditions of a place
- 9. fine particles of earth, clay, or sand that eventually settle out of water