How to Treat a Jammed Finger - Health Sutra - Duration: 1:54. Health Sutra - Best Health Tips 79,423 views
Brown rat. The brown rat, also referred to as common rat, street rat, sewer rat, Hanover rat, Norway rat, Norwegian rat, or wharf rat (Rattus norvegicus) is one of the best known and most common rats.
Sewer is a pipe or conduit carrying sewage. Sewers are usually not flow full (Gravity Flow). The full. flowing sewers are called force main as the flow is under pressure. Sewerage. It is the science and art of collecting, treating and disposal of sewage. There are three types of sewerage. system.