Similar organisms each location there are fossils of similar organisms. What is the most likely explanation for this similarity between organisms in Madagascar, India, and Australia? Multiple Choice The ancestor of these organisms lived on a landmass long ago that included Madagascar, India, and Australia. These organisms were moved back and forth to these different places by humans in recent geological history. These organisms independently arose by natural selection in each location. The organisms were introduced to all three places by extraterrestrial beings. They are on the same side of Wallace's line.