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.
But this is far from all pinto beans have to offer. Pinto beans are also an excellent source of molybdenum, a very good source of folate, and a good source of protein, vitamin B1, and vitamin B6 as well as the minerals copper, phosphorus, iron, magnesium, manganese, and potassium.