Before revision: Edible items in nature It is estimated that approximately half of about 400 , 000 plant specieson earth are edible,yet Homo sapiens consume only about 200 plant species , because these are the simplest to domesticate .
After revision: Edible items in nature Humans eat thousands of plant species; there may be as many as 75,000 edible species of angiosperms, of which perhaps 7 , 000 are often eaten .