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.
A flat roof can become very dirty and flat roof sealant will not properly stick to dirt so it is important that you clean and prepare the flat roof. Use the broom and sweep away all the debris into the dust pan and dispose of it in the garbage bags.