The Work of Peter Williamson on Freshwater Snails in Lake

Multiple Choice

The work of Peter Williamson on freshwater snails in Lake Turkana showed

A) perfectly interconnected and gradual change in species due to the uniform environment over time.
B) an abrupt radiation of species in all directions that can be used to support both gradualism and punctuated equilibrium.
C) thick deposits of unchanged snails and brief periods of rapid change,supporting gradual adaptive radiation.
D) thick deposits of unchanged snails and brief periods of rapid change,supporting the evolutionary model of punctuated equilibrium.