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Grain is the seeds of some special kinds of grass. The main types of commercial grain crops are cereals. People grow different kinds of grain as food. The different kinds of grain are perhaps one of the most important foods in the world.
Some kinds of grain are:
87% of all grain grown by farmers around the world is maize. Grains contain carbohydrates that people can eat. In poorer countries, grains are a large part of the food supply. In richer countries, they are still important as food, but not as important as in poorer countries. Growing grain uses a lot of water. About 1,000 tons of water is needed to grow one ton of grain.
Tortillas are made from a special flour of maize (corn) called masa.
- Knickerbocker, Brad (20-03-2008). "Water shortages affect food, transit, security". The Christian Science Monitor. http://www.csmonitor.com/Environment/2008/0320/p17s01-sten.html. Retrieved 31-05-2011.