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.
Like other lettuces, Romaine lettuce seeds are very fine. Plant in rows, spreading the seeds as thinly as possible. No matter how hard you try, the seeds are very difficult to disperse. Thinning seedlings is must. Cover the seeds with a very fine layer of loose soil or starting mixture.he key to growing crisp, sweet Romaine lettuce, is to get it growing at a fast pace. That means plenty of water, and a healthy dose of fertilizer. Tip: When transplanting lettuce in hot weather, place some form of sun shade over the plant for a couple of days.