The given flow chart represents the information about biodiesel cycle. According to the image, the oil crops are harvested that use sunlight for photosynthesis to grow and produce seeds. After that, the seeds are extracted and crude vegitable oild is produced from them. Moreover, after refining the vegetable oil,alcohol is added to it and this process is called transesterification. The introduction of alcohol produces biodiesel and glycerol. The glycerol is used in the food and cosmetic industry, while biodiesel is used in vehicles. The carbon dioxide released by vehicles is captured by oil crops. Overall, this looks very environment-friendly process to produce renewable fuel.