Vocabulary:

1. adapting - adjusting or changing to fit a specific use or situation

2.  archaeologists - people who study evidence remaining from man's life in past ages

3. burial - placing a dead body in a grave or the ground

4. cache - a hole or similar hiding place to store something of value

5. conflicts - disagreements or long battles

6. drought - a long period with little or no rain

7. environment - something that surrounds / everything that surrounds living things and affects growth and health

8. mammoths - a type of large elephant once found in the northern hemisphere

9. nomads - people who have no fixed home, but move from place to place

10. smallpox - a disease causing chills, high fever, headaches, and pimples