Geological data collected from the Indian Ocean are shown below. The distance from the Carlsberg Ridge (km), a feature that separates the Australian Plate from the African Plate, is given on the x-axis. The age of the oceanic crust (years) at each point, is given on the y-axis. Use this information to determine the average half spreading rate for the Carlsberg Ridge. 7.0E+07 6.0E+07 5.0E+07 4.0E+07 3.0E+07 2.0E+07 1.0E+07 Age (years)

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