If both the distance that each ocean basin has opened and the time it took to open that distance are known, the rate
of seafloor spreading can be calculated. Determine the rate of seafloor spreading for the South Atlantic Ocean basin in
centimeters per year. (Hint: To determine the rate of spreading in centimeters per year for each ocean basin, first
convert the distance from kilometers to centimeters (1 km = 100,000 cm). Then divide this distance by the time, which is
2 million years?