Refer to the graph below showing the effect of species number on arrival and extinction rates. According to the theory of island biogeography, which of the following statements about the graph is true? 
Definitions:
Operating Costs
Expenses incurred in the normal operation of a business, including costs such as rent, utilities, payroll, and materials.
Useful Life
The estimated duration of time that an asset is expected to be functional and economically viable for its intended purpose.
Target Costing
A pricing method that involves subtracting a desired profit margin from a competitive market price to determine the maximum cost of production.
Return on Investment
A financial metric evaluating the profitability or effectiveness of an investment, calculated by dividing net profit by the investment's cost.
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