12 plants and 5 animal species supply 75 percent of our food
"Focusing solely on the goal of highest production of crops grown in monocultures, the productivist model has contributed to the loss of roughly three-fourths of plant genetic diversity since the 1900s. So today, just 12 plants and five animal species supply 75 percent of the our food, making our sustenance unnecessarily vulnerable to climate change and disease." (CIS 6)
Source: "What is Happening to Agrobiodiversity?" Food and Agriculture Organization, United Nations, Gender and Development Service, Sustainable Development Department, 2004. ftp://ftp.fao.org/docrep/fao/007/y5609e/y5609e00.pdf [verified 4/25/14]