Yes, lettuce can be left out at room temperature but this will make it go bad faster if it is not kept in a sealed bag. Although lettuce goes bad pretty quickly anyway, in the fridge or not.
Yes you can, but don't do it with hot water. The iceberg lettuce can actually go bad faster by washing it with hot water.
Iceberg Lettuce.
Yes, because air is what causes it to go bad so a head of lettuce is exposed ot less air than shredded lettuce is so it will stay fresh longer.
its not
if you are you going to eat it. then yes. it will bruise the lettuce.
Yes, as long as its romaine lettuce.
if it is rubbery and brown
so they do not go bad so fast
Because it's brown, or bad.
Nutritionally speaking, lettuce really doesn't contain much of anything, so it'be more a case of lettuce not being bad rather than being actually good. But sure, if you were to compare a lettuce to a donut, then the lettuce would be "good" for you.
Not as far as nutritional value. Lettuce that is torn doesn't turn brown as fast though.