A population of fish lived in a large lake. During a storm, a huge landslide occurred, bringing a large amount of land into the lake and splitting the lake into two bodies of water. Over many years, the fish population in each body of water evolved. The two fish populations can no longer breed together.



Is the speciation above an example of allopatric speciation or sympatric speciation? Explain how you know by referring to the definition of each.