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SOIL CONSERVATION

Teacher: Mr. Prussman
Across
Figure 25-10 on page 305 WT shows how rows of trees and hedges reduce the force of strong winds.
Two natural causes of soil erosion are runoff water and _________.
__________is made up of tiny rock particles, water, air and HUMUS.(290 WT)
Repeatedly changing one crop with another in the same field is called ________of crops. (306 WT)
Down
Step-like, flat areas that are dug on steeply growing farmland are called_______. (305 WT)
The continuous year-to-year growing of only one type of crop removes large amounts of soil ________. (305 WT)
Planting alternate strips of two different crops helps conserve soil loss. It is called ______ cropping. ( 305 WT)
After harvesting a crop, farmers should not leave the soil uncovered. Instead they should plant a cover crop such as ______. (305W T)