An Unhealthy pH Level. Tooth decay can occur when the pH level in the mouth is 5.5. For reference, the neutral level is 7.0. When we consume acidic foods and drinks, the pH within the mouth decreases and can cause the pH in the dental plaque to fall rapidly below 5.0.
Plastic Golden Age Passports are valid for a lifetime. However, if you do want the new Senior Pass, you may purchase one for $10, with proof of identification (e.g., driver's license, birth certificate, or similar government-issued document).lastic Golden Age Passports are valid for a lifetime. However, if you do want the new Senior Pass, you may purchase one for $10, with proof of identification (e.g., driver's license, birth certificate, or similar government-issued document).
The Senior Pass replaces the Golden Age Passport and is for citizens or permanent residents of the United States, who are 62 years of age or older. It provides access to, and use of, any Federal recreation site that charges an Entrance or Standard Amenity Fee, and provides a discount on some Expanded Amenity Fees.he cost of the Senior Pass is $10, and it is valid for the lifetime of the pass holder. Photo identification may be requested to verify pass ownership. Existing plastic Golden Age Passports are valid for a lifetime.