crop or one kind of animal. They choose the kind that gives the best

results. Then they sell all that they produce, instead of trying to

grow a little of everything and consume what they grow. 50. This is a

more feasible type of operation because modern methods and machinery

are adapted to specific animals and specific crops. Therefore, it would

be too expensive to do all the work by hand, or to buy the equipment

needed for several different kinds of farming.