Across
- 3. turning old things into something new
- 4. a very tall hill
- 6. things that are thrown away
- 8. dirty air, water, or land
- 10. when soil and rocks suddenly slide down
Down
- 1. a place full of trees
- 2. putting plants in the soil
- 5. the planet we live on
- 7. water covering land due to heavy rain
- 9. a huge are of water on earth