Spare the plow, save the soil.
Karasov
Corliss
C
D000383:Agriculture / Q000379:methods*; D002245:Carbon Dioxide; D003247:Conservation of Natural Resources; D003362:Cost-Benefit Analysis; D003906:Developing Countries; D017752:Greenhouse Effect; D006801:Humans; D007391:International Cooperation; D010945:Plants, Edible; D012987:Soil
D012987:Soil; D002245:Carbon Dioxide