Two different models have been developed to describe the pace of evolution: gradualism and the punctuated equilibrium. Which of the following descriptions correctly describes the punctuated equilibrium model of evolution? (Choose all three answers that apply.) it can only occur if a population becomes separated by biological barriers it can be used to describe divergent evolution it proposes that species can go long periods of time without experiencing any change it involves the accumulation of many small changes over time it is supported by evidence from the fossil record.