ELI5: Explain Like I'm 5

Maximum life span

Maximum life span is the longest amount of time a species can live. For example, the maximum life span of a human is estimated to be around 122 years old. Through evolution, different species have evolved to live longer or shorter lifespans. For example, some animals, like tortoises, can live up to 300 years, while other animals, like flies, only live a few weeks.