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.
How to make my exhaust louder? I don't know much about exhausts other than putting on aftermarket mufflers since I've done it to two cars already. I know mufflers only make the car have a deeper tone and makes it sound louder from within the cabin but it barely does anything outside of the car. My question is how do I make it sound... show more I don't know much about exhausts other than putting on aftermarket mufflers since I've done it to two cars already. I know mufflers only make the car have a deeper tone and makes it sound louder from within the cabin but it barely does anything outside of the car.