Limestone is a sedimentary rock that is composed primarily of calcite. It forms from both the chemical precipitation of calcium carbonate and the transformation of shell, coral, fecal and algal debris into calcite during diagenesis.
To calcu-late the PPF, suppose that Crusoe puts all 8 hours into gathering fruit, so that he gets 36 pounds. But there is no time left for fishing, so he gets 0 pounds of fish. If he takes an hour off from gathering fruit, he gets 35 pounds of fruit and has an hour in which to fishâso he gets 4 pounds of fish.The rest of the PPF is con-structed similarly. 2.ut there is no time left for fishing, so he gets 0 pounds of fish. If he takes an hour off from gathering fruit, he gets 35 pounds of fruit and has an hour in which to fishâso he gets 4 pounds of fish. The rest of the PPF is con-structed similarly. 2.
It takes him an hour to catch one fish (a lousy, fisher, no doubt). Since he can collect 10 coconuts per hour, the opportunity cost of one fish is 10 coconuts. c) If you drew the graph asked in part a), you may have already noticed that the PPF on. this island economy is a straight line instead of being bowed outward. The reason is that there is only one factor of production: Robinsonâs time (labor). If you remember the explanation in part c) of problem 1, we said that the reason for the bowed out shape was the existence of two different kinds of land (two factors of production).