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Plant World

Introduction and Historical Background

How much do plants contribute to the human diet?

A 14-leafed white clover (Trifolium repens) and a 14-leafed red clover (Trifolium pretense) have been found in the United States.

In the United States and Western Europe approximately 65 percent of a human being’s total caloric intake and 35 percent of consumed protein are obtained from plants or plant products. Soybeans are an example of a plant with high protein content. In developing nations almost 90 percent of calories and more than 80 percent of protein in a person’s diet are from plants.



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