1.campaign n ____________
2. sandstorm n ____________
3.inland adj ____________
4. mass adj ____________
5. frightening adj ____________
6. desertification n ____________
7.dust n ____________
8. citizen n ____________
9. dune n ____________
10. process n ____________
11. atmosphere n ____________
12. forecast vt ____________
13. strength n ____________
14.cycle vi ____________
15. mask n ____________
16. carbon n ____________
17. dioxide n ____________