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.
Fat Calorie Details. While not a major contributor to calories, your favorite lettuce does have a trace amount of fat. Youâll get between 0.12 and 0.26 gram of fat from your 3-ounce serving of lettuce. Because fat has 9 calories per gram, this amounts to a mere 1 to 2.3 calories from fat.