30 140 130 120 110 100 90 80 70 60 50 45 40 50 60 70 80 90 100 110 120 130 140 Find the measure of ZEOD. 10 20 35 E B А A

The oldest rocks in the south atlantic ocean, immediately adjacent to the african and south american continental shelves, are 120,000,000 years old (time). calculate the average rate of seafloorspreading for the south atlantic ocean over its entire existence (hint: use formula: velocity = distance/time): /yr (velocity). now convert that to: cm/yr: