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.
Romaine lettuce is the perfect supplement to a weight loss diet. To lose weight effectively, you must take in fewer calories per day from food than your body uses. Because romaine lettuce only contains 17 calories per serving, you may eat large portions of romaine lettuce and still lose weight.