Maize, commonly known as corn, is a large grain plant domesticated by indigenous peoples in Mexico. The six major types of corn are dent corn, flint corn, pod corn, popcorn, flour corn, and sweet corn.
Petroleum refining processes are the chemical engineering processes and other facilities used in petroleum refineries to transform crude oil into useful products such as LPG, gasoline or petrol, kerosene, diesel oil and fuel oils.
The wind systems that exist over the earth’s surface are a result of variations in air pressure. These are in turn due to the variations in solar heating. Warm air rises and cooler air rushes in to take its place.