soil conservation
harmful practices
grass destroying
log forest
contruction
framing
soil cant be held in place
erode
carried away by water
carried away by wind
soil downgrade
soil contamation
protect soil
adding organic material
hold more water
increase in soil fertility
careful farmer
keep soil quality
planted in each row of feild
replenish soil nutraints
preserve soil
building trenches on steeper slops
help hold together