Why do archaeologists use flotation?
A. to identify regional settlement patterns
B. to recover very small remains like fish bones and seeds
C. to control for the location of artifacts in three-dimensional space
D. to establish relative chronologies
E. to study the processes of stratigraphy
Question 2
The principle of superposition states that in an undisturbed sequence of strata,
A. the oldest layer is on the top.
B. the oldest layer is on the bottom.
C. the stratigraphic techniques are useful only if the soils have a high content of sandstone.
D. the youngest layer is the least disturbed by environmental changes such as erosion.
E. the oldest layer is the shallowest in the sequence.