In Depth: Chest. A womanâs chest â like the rest of her body â is covered with skin that has two layers. 1  The epidermis is the outermost layer that provides a protective, waterproof seal over the body. 2  The dermis is the under layer that contains sweat glands, hair follicles, blood vessels, and more.
Natural gas is furnished by privately owned Puget Sound Energy, which began its existence in 1886, generating electric power as the Seattle Electric Light Company.
The Department of Energy (DOE) estimates that in 2011, natural gas is the lowest cost conventional energy source available for residential use. According to the DOE, natural gas costs approximately 68 percent less than the cost of electricity, per Btu (British thermal unit).