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.
3Chlorophyll helps plants to trap light energy to photosynthesise. 4 Plants can photosynthesise in the absence of water. 5 Plants get energy from the sugar they make. 6 Plants are food producers. 7 Not all animals are food consumers.8 Some food consumers feed on plants only.9 Monkeys are an example of omnivores.10Carnivores are organisms that feed on both plants and meat. How Do Organisms Get Their Energy? Look at the following statements and tick in the columns below if they are true or false.