Across
- 2. people moving from rural to urban area
- 6. loss of crops in a farm
- 9. long period without rain or rain is much lower than normal
- 12. topsoil removed by wind and water
- 13. increasing proportion of old people
Down
- 1. relating to a town or city
- 3. amount of crops that can be grown on the land
- 4. growing too many crops
- 5. spread of desert to its surrounding area
- 7. too much water covering land after heavy rain
- 8. harmful substance in the environment
- 10. insects that eat crops
- 11. rain that is acid