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.
Once Crusoe discovers the new pond, however, he can gather 21 pounds of fruit and catch 30 pounds of fish. (In Row F, double the amount of Crusoeâs fish.) The PPF depends on the available factors of production and when the factors of production increase, Crusoeâs production possibilities change. 2013 Pearson Education, Inc. Publishing as Addison Wesley TheEconomic Problem Chapter CHAPTER CHECKLIST Chapter 3 develops an economic model, the production possibilities frontier, or PPF, model.