Answer: life expectancy
Explanation: By January of 1992, by popular demand, theSoviet Union ceased to exist. In its place, a new entity was formed. It was called the “Commonwealth of Independent Republics,” and was composed of most of the independent countries of the former Soviet Union.After the fall of communism in russia, all of the following increased except life expectancy
They allow you to see how the continents were once placed together.
it is the benthic zone , that's the answer