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.
There is water in lakes and seas as well as in the ground. The sun provides light and heat energy. The plants use what they have: carbon dioxide, water, and light. In a process called photosynthesis, plants capture energy using only carbon dioxide, water, and light to make a sugar called glucose.They also release oxygen and water molecules into the air. Here is a picture of what actually happens: Let's see what is happening here.arbon is a very important component of plant tissues. Chloroplasts capture the energy from the sun and also capture the carbon dioxide molecules in the air or dissolved in the water.. They make food for the plant and for whatever animal eats that plant.