Across
- 3. people who wander from place to place
- 5. an object made my human beings
- 8. the process of changing plants and animals to make them more useful to humans
- 9. The science of farming
Down
- 1. the earliest part of human history, known as the Old Stone Age
- 2. the period of time before written records
- 4. people who hunt wild animals and gather wild plants to survive
- 6. the study of the past based on artifacts left behind
- 7. Time when people began to domesticate plants and animals, known as the New Stone Age