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An olive branch is seen at Cuna de Olivares’ 500-hectare olive plantation in Reduccion district, Mendoza, Argentina on January 25, 2013, where different varieties of olives are developed to produce olive oil. Olive trees are clones of the same genetic variety so there is not variability between plants. AFP PHOTO / DANIEL GARCIA (Photo credit should read DANIEL GARCIA/AFP/Getty Images)

An olive branch is seen at Cuna de Olivares’ 500-hectare olive plantation in Reduccion district, Mendoza, Argentina on January 25, 2013, where different varieties of olives are developed to produce olive oil. Olive trees are clones of the same genetic variety so there is not variability between plants.  AFP PHOTO / DANIEL GARCIA        (Photo credit should read DANIEL GARCIA/AFP/Getty Images)