Across
- 2. The remains of living organisms that have been replaced
- 7. changing of the Earth's surface from wind and water
- 8. The late Stone Age when agriculture began and copper tools developed
- 11. water that is not salty and can be used for crops and drinking
- 14. Times when people did know how to read or write
- 15. an imaginary line that circles Earth at 66.5 degrees
Down
- 1. the Early Stone Age
- 3. scientist who study fossils of plants and animals
- 4. Areas where temperature and climate are more moderate
- 5. The inventions and tools that help us do things better
- 6. Of History Major events that changed how humans live
- 9. single large landmass of the Earth
- 10. Zero degree longitude and divides Earth's Eastern and Western hemispheres
- 12. zero degree latitude and divides the northern and southern hemispheres
- 13. scientific study of past human life
