Across
- 1. to do one thing well
- 4. era "old stone age" the first part of the stone age, when humans first started to use stone tools
- 6. human existence in cities, with systems of education, religion, government, specializations
- 7. a long time period defined by specific social, cultural, and political characteristics
- 9. the use of skills and tools to meet practical human needs
- 10. an extra supply of something
- 11. the time before writing
- 12. people who moved from place to place to meet their basic needs, by hunting animals and gathering plants
- 13. Era "new stone age" this era marked the beginning of agriculture, sometimes known as the Neolithic Revolution
Down
- 2. farming the raising of crops and animals for human use
- 3. to move from place to place
- 5. an object to help a person accomplish a task
- 8. the training of plants and animals to make them useful to humans
