A group of scientists are investigating species diversity on an uninhabited chain of islands. The scientists design a research study in which they visit a large island in
the chain that is located 5 miles from the nearest island. The research island is also
far from the main shipping routes and 20 miles from the mainland. They mark off a
one-hectare study plot of forested land and catalog the number of distinct species
found within the plot. To validate their findings, the scientists want to choose a
second island in the chain to visit and replicate their study.

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