CURT MAAS / AGSTOCKUSA / SCIENCE PHOTO LIBRARY CURT MAAS / AGSTOCKUSA / SCIENCE PHOTO LIBRARY
Unloading grain that has been harvested from maize plants (Zea mays). The grain is being unloaded over a grille through which it will fall into a storage area. The grain may be ground into flour, or used for its oil, or used to feed animals. Photographed in Iowa, USA.
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