Speed, Time, and Distance/7
Speed, Time, and Distance/6
Speed, Time, and Distance/5
Speed, Time, and Distance/4
Speed, Time, and Distance/3
Speed, Time, and Distance/2
Speed, Time, and Distance/10
Speed, Time, and Distance/1
Soil/1
Separation Techniques/1
 and wind (Figure 2) or through forces associated with farming activities such as tillage.)
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