The number of people living on an island gradually increases when more people are added to its population than leave or die.
This can happen for several reasons:
- More births: Families have children, so the population grows.
- People move to the island: They may come for jobs, education, safety, or a better place to live.
- Fewer people die: Better healthcare, clean water, and improved living conditions can help people live longer.
In short: The island’s population grows when more people are born or move there than move away or die.