The diagram illustrates the manufacture of ethanol fuel from corn. The process of making this fuel requires 9 steps in total. It begins with harvesting corn and ends with delivering products to the gas station.
The first stage involves collecting corn from fields and then delivered to warehouses to store. After that, corn is milled in the grinder and mix with water to be cooked for 4 hours. The mixture after cooking is fermented in 48 hours.
At the next stage of the process, the combination is separated into liquid and solid by-products, a liquid obtained and then be purified in 5 hours to eliminate bacteria before stored in fuel tanks. Finally, ethanol fuel production ends when the product is loaded into containers and moved to the gas station.
- Despite a large number of gyms a sedentary lifestyle is gaining popularity in the contemporary world What problems are associated with this What solutions can you suggest 78
- The diagram below shows one way of manufacturing ceramic pots 84
- The charts below show the percentage of people working in different sectors in Town A and B in two years 1960 and 2010 67
- Some educational systems make students focus on certain subjects at the age of 15 while others require students to study a wide range of subjects until they leave school What are the benefits of each system Which is better 73
- The charts below give information on the ages of the populations of Yemen and Italy in 2000 and projections for 2050 Summarise the information by selecting and reporting the main features and make comparisons where relevant 78