You are an anthropologist observing a new society that no one else has explored. You are trying to determine the subsistence pattern of the group. The group is highly mobile and is constantly moving around their geographic area. They do not rely on domesticated animals like cattle. The size of the group remains small, usually not more than 20 people. Sometimes, when resources are plentiful, a number of different smaller groups will come together into a larger group for a few weeks. However, when the resources become scarce again they will disperse into their smaller groups. Based on these observations, what type of subsistence pattern do you think that this group uses?