Jonathan worked on understanding the carbon cycle. First Jonathan studied a pie graph of the content of air. He copied the pie graph and labeled it. Jonathan learned that "air" is a general work to mean various gases that are present in the atmosphere. By doing this lesson, Jonathan learned that the air has 78% nitrogen, almost 21% oxygen, and six noble gases as well as .03% carbon dioxide. Jonathan reviewed the meaning of photosynthesis to further understand that besides sunlight, plants need carbon dioxide to complete the process of making glucose. Jonathan learned that glucose is a form of sugar. He learned the six noble gases are argon, krypton, xenon, radon , helium and neon. Jonathan noted that there are various ways in which carbon is part of our environment. He learned that carbon becomes either part of the soil or part of the air when decay takes place on a plant or animal. He learned that the sea creatures use carbon mixed with calcium in the ocean to form calcium carbonate to make the shells that are part of the sea creatures like clams. Jonathan also discussed the use of fossil fuels and saw a carbon cycle chart. He could see that the plants on the Earth use the carbon dioxide from man and animals, but that when too much carbon dixoide goes in the air, it can be harmful because there is an imbalance between carbon and oxygen. Jonathan read that too much carbon can cause damage to the plants and animals in the ocean. Jonathan reviewed the parts of the water cycle. We discussed the meaning of condensation. Jonathan followed the water cylce chart taking note of evaporation, condensation, rain, runoff, and ground water collection. We will finish with the nitrogen cycle.