The corn is a plant that needs a lot of water and light to grow. When it's ready to be harvested, its height is between 2 and 3 meters. Just like in the weath fields, the farmers use harvesters to harvest the corn. These machines separates the kernels from ears. Corn grains can turn into flour or oil. Corn is the most produced cereal in the world and Mexico, El Salvador, Guatemala and some South Africa countries are it's principal consumers.