Need motivation to eat less meat and more plants? . . . part 6 of 12

Are plant sources of protein sufficient?   Today, good stats about the need for protein:   Protein in human mother’s breast milk: 5 percent of calories   Minimum protein requirement according to the World Health Organization: 5 percent of calories   U.S. Recommended Dietary Allowance (RDA) for adult protein intake: 10 percent of calories  …