Across
- 1. a change to the environment due to lack of water
- 5. a sustainable way to farm on water
- 8. a ball game very important to the Aztec civilization
- 9. a city home to the Inca civilization
Down
- 2. a creative way to farm in mountains
- 3. the study of ancient civilizations through unearthing artifacts and old sites
- 4. a creative Inca device for recording information
- 6. a stick used by some civilizations to propel spears
- 7. a sustainable way to transport water