Definition. noun, plural: autotrophs. A organism capable of making nutritive organic molecules from inorganic sources via photosynthesis (involving light energy) or chemosynthesis (involving chemical energy) Supplement
Spinach also contributes to your daily intake of iron and calcium. Although spinach naturally contains sodium, it only provides 25 milligrams per cup and the 10-ounce bag contains only 224 milligrams, increasing its desirability as a heart-healthy food.
Iron Content of Spinach. Spinach contains 2.7 milligrams of iron per 100 grams. Grams is a measure of weight. To put 100 grams in perspective, consider alternative measures for this food: 1 cup equals 30 grams. 1 bunch equals 340 grams.