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 gas forms when solid waste from humans and animals decomposes. The gas contains ammonia, methane and hydrogen sulfide, all of which are toxic when inhaled in high concentrations. People can die through asphyxiation when exposed to very high concentrations of sewer gas. More common effects include eye irritation, nausea and breathing difficulty.