Reversing any two dimensionswill describe a completely different unit. Using the sameexample stated as 4x8x16 would indicate a unit 4 inches wideand 8 inches high (not 8 inches wide and 4 inches high).
Many water fleas swimming together. The water flea is a microscopic crustacean (around .2-5 mm long) that lives in lakes, ponds, swamps, and streams. The most common kind of water flea is the Daphnia. This little, translucent insect is named for the way it swims.
The water and dish detergent mixture is like a toxic swimming pool for fleas. When they jump into the mixture, they die. Place the water and detergent mixture in a very shallow bowl, low enough to the ground so that the fleas accidentally hop into it. An old frisbee does the job quite well.