Native maize varieties. Man measuring the diameter of a native maize (Zea mays) cob grown in Oaxaca State, Mexico. This example is one of many varieti

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Native maize varieties. Man measuring the diameter of a native maize (Zea mays) cob grown in Oaxaca State, Mexico. This example is one of many varieties of corn that were first cultivated 7000 years ago from the wild teosinte maize plant.

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Photo credit: © PHILIPPE PSAILA/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

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