Across
- 2. rock that makes up the earth crust
- 3. a substance that provides nutrients so crops grow better
- 4. a long period of no precipitation
- 6. the process of restoring land to a more natural form
- 8. the advanced desert-like conditions into areas that were once fertile
- 10. the layer of soil below topsoil made of mostly clay and other materials
Down
- 1. a situation when more soil nutrient are used than produced
- 5. the very top layer of soil made for dead leaves and grass
- 7. the crumbly top layer of soil
- 9. the process of weathering away rock