Across
- 2. This predator eats prairie dogs.
- 4. Quick change to an ecosystem.
- 6. Prairie dogs build these for homes.
- 8. Bison benefit from this animal.
- 9. Predictable changes to ecosystem.
Down
- 1. When scientists watch and take notes.
- 3. Scientific proof of a fact.
- 4. Beavers build these.
- 5. This animal lives in prairie dog home.
- 7. A slow change to an ecosystem.