What Is a Social Security Number (SSN)? A SSN is a nine-digit identifying number is in the format xxx-xx-xxxx. Any individual who is a U.S. Citizen, a permanent resident, or a temporary alien resident who is authorized to work in the United States, must have a SSN.
The most common cause of a flat tire is puncturing of the tire by a sharp object, such as a nail, letting air escape. Depending on the size of the puncture, the tire may deflate slowly or rapidly.
Lengthwise grooves or ridges may indicate a kidney disorder and is associated with aging. An iron deficiency may also cause ridges. Brittle nails signify possible iron deficiency and thyroid problems, impaired kidney function and circulation problems. Flat nails can denote Raynaudâs disease. Yellow nails can indicate internal disorders long before other symptoms appear. Some of these are problems with the lymphatic system, respiratory disorders, diabetes and liver disorders. White nails indicate possible liver or kidney disorders and /or anemia. Dark nails and/or thin, flat, spoon-shaped nails are a sign of anemia. Deep blue nail beds show pulmonary obstruction such as asthma or emphysema. Nail bleeding is a sign of rheumatoid arthritis. Pitted red-brown spots and frayed and split ends indicate psoriasis; Brittle, soft, shiny nails without a moon may indicate an overactive thyroid.