The pulse rate is a measurement of the heart rate, or the number of times the heart beats per minute. As the heart pushes blood through the arteries, the arteries expand and contract with the flow of the blood. The normal pulse for healthy adults ranges from 60 to 100 beats per minute.
Health Hazards of Sewer Gas Backing up in the House Sewer gas is a mix of both toxic and nontoxic gases created by the decomposition of household and industrial waste. Gas levels... The Effects of Breathing Methane Gas Methane is a chemical compound composed of one atom of carbon and four atoms of hydrogen (CH4).
You might find clay, cast-iron, or plastic sewer pipe. Clay and cast-iron are older types; plastic is the newest. Just because a house is old doesn't mean it won't have plastic sewer pipe. As the years wear on, sewer systems deteriorate, necessitating replacement. You might even find cast-iron or clay sewer lines at a new house, though this is not likely.