CK-12 Foundation
Ck 12: Second Grade Science: Preventing Erosion
[Free Registration/Login may be required to access all resource tools.] Demonstrates how water and wind move soil, which can cause issues for farmers.
Curated OER
Soil Loss in the Us
Reasons for concern, soil degradation, gravity and compaction, rain, wind, and remedies for saving cropland are just a few of the many topics explored in this all encompassing site.