Across
- 3. change in order to survive
- 4. what people in the future will call our time period
- 5. a traveling person without a home
- 7. the early part of human history
- 9. continent with hunter gatherers
- 11. the use of new ideas and tools to do work
Down
- 1. long periods of extreme cold on earth
- 2. made it easier for people to work together
- 6. northwest of jericho
- 8. could cook food,had light at night and provided warmth
- 10. a hard stone with sharp edges