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.
In one of the examples before, we had kelp as a pro ducer. The kelp is eaten by fish such as the halfmoon fish, a fish called the opalaye, and clown fish. Therefore, the opaleye fish, the halfmoon fish, and the clown fish are all primary consumers.Plankton is eaten by whales, which filter the plankton by its teeth.Whales are then a primary consumer.Seaweed is also eaten by crabs, making them a primary consumer.herefore, the opaleye fish, the halfmoon fish, and the clown fish are all primary consumers. Plankton is eaten by whales, which filter the plankton by its teeth. Whales are then a primary consumer. Seaweed is also eaten by crabs, making them a primary consumer.