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.
Once leaves begin to appear and they are about 4 inches long, you can begin harvesting leaf lettuce. Simply snip either single outer leaves or grab a bunch of them and cut them with shears or scissors an inch above the crown of the plant. If you cut into or below the crown, the plant will probably die, so be careful.