In the troposphere, temperatures decrease with altitude (air pressure), which is known as the adiabatic lapse rate (9.8 Â°C per thousand feet). While there are different tempeâ¦ratures throughout the atmosphere, there are both increases and decreases in it as one moves upwards.
To easily shred romaine lettuce, stack several washed and dried leaves, roll up to form a cylinder and slice crosswise at 1/4- to 1/2-inch intervals. For best results, do not toss lettuce with dressing until just before serving as the dressing wilts the leaves.
Cut the plant off at ground level or dig up the entire plant and trim off the roots and any wilted or damaged leaves. 1  Shears. 2  Trim out any dead, damaged or pest-infested leaves at any time during the growing season.  University of Nebraska: Growing and Preparing Loose Leaf Lettuce.