'In the 1950s pollen grains of this crop plant estimated to be 60,000 years old were found in Mexico City'
corn (or maize)
PLANTS: In the 1950s pollen grains of this crop plant estimated to be 60,000 years old were found in Mexico City
In the 1950s pollen grains of this crop plant estimated to be 60,000 years old were found in Mexico City
In the 1950s pollen grains of this crop plant estimated to be 60,000 years old were found in Mexico City
PLANTS
corn or maize
PLANTS