The construction had caused all the topsoil to wash away. The rich topsoil of the prairies made good field for the crops.
wind
erosion
It's called "contour plowing", plowing in arcs and curves, avoiding endless long, straight lines of plowed field, in an attempt to cut down on the amount of dry topsoil the wind blows away. It is moderately effective, but when combined with the "no til" approach to farming, it goes a long way toward preserving topsoil.
Runoff I belive.
The rich topsoil helped the crops grow quickly. The wind blew the topsoil away, causing the dust bowl.
The construction had caused all the topsoil to wash away. The rich topsoil of the prairies made good field for the crops.
wind
Hmmm. I think the Human :)
erosion
78.4 grams
It's called "contour plowing", plowing in arcs and curves, avoiding endless long, straight lines of plowed field, in an attempt to cut down on the amount of dry topsoil the wind blows away. It is moderately effective, but when combined with the "no til" approach to farming, it goes a long way toward preserving topsoil.
If we don't plant some trees on this slope, the topsoil will wash away with the first rains.
when the topsoil is washed away, the land is barren.
Runoff I belive.
temperat
Wind.Cold wind ;)