of human-plant interactions. Paleoethnobotanists use a variety of methods to identify and recover plant remains. One method used to recover macroremains is to sieve excavated material manually in a water bath in order to allow the organic material to float to the surface. This method is known as flotation. The matrix (the soil from a suspected archaeological feature) is slowly added to agitated water. The soil, sand, and other heavy material, known as heavy fraction, will sink to the bottom. T… (More on Paleoethnobotany)