dustbowl

3. to speed up the process
5. people not getting enough nutrition
6. the upper layer of soil
9. project to create windbreaks in the great plains
11. farming practice of plowing or planting across a slope following its elevation lines
13. process where land becomes visibly less healthy
15. severe dust storms that damaged agriculture American and canaidan praries during the 1930s
16. gradually destroyed or worn away
17. prevention of loss of the topmost layer of the soil from erosion
19. height above a level
20. method of farming which involves cultivating a field
21. semi-desert climate

1. warmer and drier than those that form over the ocean
2. federal agency in 1935 to coordinate relief activities in response to the dustbowl
4. when the lungs are filled with dust
7. agency of the US department of agriculture
8. when people inhaled dust and got colds
10. broad expanse of flatland in North America
12. severe dust storm that happened on April 14, 1935
14. When there is no rain
18. someone moving one place to another