Ómo this one tough ooo..E choke!
First off, lifespan is the maximum number of years that a human can live, while life expectancy is the average total number of years that a human achieves.
Scientists estimated that the limit of human lifespan is about 150 years. While most of us can expect to live to around 80, some people defy expectations and live to be over 100.
So the question is,