Curium is a hard, brittle, radioactive silvery metal. It does not occur in nature and must be made in a nuclear reactor by neutron capture reactions from plutonium and americium isotopes. It tarnishes slowly in dry air at room temperature.
Romaine lettuce is a rich source of fiber and has very few calories, only 8 in a one-cup serving. In terms of vitamins, a cup of Romaine lettuce delivers more than 50% of your daily requirement for vitamin A, as well as significant levels of vitamin K and vitamin C.
Basic Salad Ingredients. Most leafy greens and nonstarchy salad vegetables are low in calories and carbohydrates. According to the AND food exchange list, 1 cup of romaine lettuce has 8 calories and 2 grams of carbs and 1 cup of raw spinach has 7 calories and 1 gram of carbs.