history crossward

3. Way of life where people move from place to place to find pasture for their herds
6. A city with big walls
8. Another word for a cow
11. tame and retain an animal as a pet or for agricultural produce.
12. large snow, ice, rock, or sediment that starts on land and ends up in the water
13. Land that appears when sea levels fall, creating a way to travel across an area that was once under water.
14. Used by the early people to fish
15. is anything made by humans ex. tools, pottery, or fabrics that archeologists study to learn more about the past.

1. A tool used by the early people and used for hunting
2. is a scientist who studies the history of life on Earth through fossil records.
4. a time when the world was covered in ice
5. An instrument the early people used
7. Another word for a cow
9. it's a theory that the earth and the lifeforms evolved in a long period of time.
10. is an open grassy plain with some or no trees in a tropical or subtropical region.