sentences: as ability to preserve food increases , the ability to transport food increases
docs: harnessing is controlling. food_salting_event is preserving_food. preserving_food is taking_care_of. pasteurization is preserving_food. preserving_food is food_manipulation. smoking_food is preserving_food. feeding is promoting. preserving_food is becoming. food has effect_of_suppressing_hunger preserving_food is prevention_of_spoilage.