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.
A penguins diet consists primarily of fish, squid and krill. Depending on the species of penguin their food preference can vary which also helps reduce competition for food. Large colonies are able to consume millions of pounds of food on a daily basis. Penguins rely on their eyes to find food while underwater. Most dives for food do not exceed 60 feet, although some species are capable of diving nearly 2,000 feet for when hunting for prey. They capture their prey by grabbing it with their bill and swallow their food whole.