You and a team of archaeologists are analyzing a faunal assemblage from an archaic site in the Great Basin. You find that early in the site sequence, deer dominates the assemblage, but over time more rabbits and hares-and even prairie dogs- show up as food refuse. Assuming that peoples' dietary needs or gastronomic preference didn't change, develop one or two theories as to why you might be seeing this pattern. Include a brief description of any formal model you use. What kinds of additional archaeological data might support your argument?