Table of Contents (click to expand)Two Types Of EvolutionReproductive Cycles Determine Evolutionary SpeedNew Species Can Sometimes Evolve In A Few YearsAdaptive Evolution Can Occur Over A Relatively Short Period Of TimeConclusion Evolution can happen on two fronts: fast and adaptive evolution happens in shorter time frames, from a few thousand years to even just a few decades, while macroevolution leading to the formation of different species often happens over longer time spans, usually a fe...
