Scales protect the fish from its environment. They overlap like shingles on a roof so that the skin of the fish is not exposed. As a fish grows, their scales produce rings much like a tree-and that is one way scientists can tell how old a fish is.Most fish get extra protection from a layer of slime that covers their scales. This slime helps them move through the water better, and keeps pests off of the fish skin.s a fish grows, their scales produce rings much like a tree-and that is one way scientists can tell how old a fish is. Most fish get extra protection from a layer of slime that covers their scales. This slime helps them move through the water better, and keeps pests off of the fish skin.
Inside a Muffler. Located inside the muffler is a set of tubes. These tubes are designed to create reflected waves that interfere with each other or cancel each other out. Take a look at the inside of this muffler: The exhaust gases and the sound waves enter through the center tube.
To muffle is to quiet a sound, usually by wrapping it with something. If you try to speak with a scarf over your mouth, your voice will be muffled. When a hitman puts a silencer on a gun, he's muffling the sound of gunshots, since muffling makes things quieter. Usually, muffling involves wrapping something around or putting something over a noisy thing. Muffling dampens, tones down, deadens, and dulls. Also, if you hold down your emotions and don't express them, you're muffling them.