Why Are Islands and Island-Like Habitats Considered Appropriate Models for Illustrating

question 20

Multiple Choice

Why are islands and island-like habitats considered appropriate models for illustrating the species-area relationship?

• A) Islands provide a defined and isolated area that can more easily be studied.
• B) Species diversity on islands tends to be high due to increased concentrations in smaller spaces.
• C) The isolated nature of island geography contributes to higher incidences of extinction than mainland areas do.
• D) Islands can be colonized only by immigration, which is the most important factor in the species-area relationship.
• E) The species-area relationship holds true only in habitats that are completely isolated from other areas.

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