Answer:
Villages moved to follow the food supply.
Explanation:
Following food is a form of hunting and gathering. If they were following certain types of fruits and vegetables, they would have to set up camp to wait for them to fully ripen or grow. Being nomadic means you wander always. Never have a home. Because they had to have temporary homes to wait on growing foods, that makes them semi nomadic. They will move again to find more areas of crop.
