Question

question 20 the theory of punctuated equilibrium is based on the observation that brief periods of intense speciation alternate with long periods of stasis new species appear in the fossil record alongside their unchanged ancestors evolutionary change does not seem to occur at a constant pace all of the above

Explanation:

The theory of punctuated equilibrium posits that evolution occurs in bursts of rapid speciation (intense speciation) followed by long periods of little or no change (stasis). Fossil records often show new species appearing alongside unchanged ancestors, indicating non - constant evolutionary pace. All these are key aspects of the theory.

Answer:

D. all of the above