4 years ago. because nitrogen-fixing bacteria live inside them in a symbiotic relationship. basically, these nitrogen loving bacteria help the plant AND get benefits from the plant. a win-win situation; that is basically what symbiosis means. hope this helped. :) anonymous.
Lima beans are packed with protein and a wide array vitamins and minerals. They are particularly a good source of copper, manganese, folate, iron and cholesterol-lowering fiber. They also provide numerous health benefits including: promoting heart health, producing energy and stabilizes blood sugar levels.
The average amount of protein in eight different beans -- white, adzuki, pinto, kidney, black, navy, garbanzo and lima -- is 15 grams. White beans have the most protein, with 17.42 grams in 1 cup. Lima beans are at the bottom of the list, with 1 cup containing 10.32 grams. The others have 15 to 17 grams of protein in 1 cup. Except for garbanzo beans, a 1-cup serving has just 0.23 to 1.1 grams of total fat.