By far the best-studied benthos are the macrobenthos, those forms larger than 1 mm (0.04 inch), which are dominated by polychaete worms, pelecypods, anthozoans, echinoderms, sponges, ascidians, and crustaceans.
Gargling with salt water several times a day is an effective treatment for chest congestion. While the salt helps remove mucus from the respiratory tract, the hot water reduces irritation in the throat. 1  Add 1 teaspoon of salt to a glass of warm water.  Mix well until the salt is dissolved thoroughly.
Although common cold is one of the common causes of chest congestion, other factors that increase your risk are â. Smoking: In a smoker, when the cigarette smoke enters the wind pipe and bronchioles, the cilia (processes that prevent the foreign particles from entering the lungs) get damaged.