A group of people who share a similar experience common to all of its members is called a generation.
More about generation:
A generation is the collective term for all individuals who were born and are still alive at around the same period having same experiences. The average time frame, commonly regarded to be between 20 and 30 years, during which children are born, grow up, become adults, and start having children is another way to put it.
In social science, the terms "generation" and "cohort" are sometimes used interchangeably to refer to "individuals within a defined population who experience the same key events over a certain period of time."
These birth cohorts, usually referred to as "social generations," are frequently employed in popular culture and have served as the foundation for sociological study.
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Answer:
They provide a way to understand the processes that might otherwise be outside the scope of humans. 2) they provide scientists with foundation for further experiments & hypothesis. Sorry its so long.
Explanation:
They could trade with other places for food and materials
