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).
1 For Minors eligibility to apply for 10 years validity Passport: Effective from 21 st May, 2015 On completion 15 Years of age irrespective of the Passport's place of Issue-in such cases it is mandatory to attach both Parents Passport Copy and Signature on the application. For Minors eligibility to apply for 10 years validity Passport: Effective from 21 st May, 2015 On completion 15 Years of age irrespective of the Passport's place of Issue-in such cases it is mandatory to attach both Parents Passport Copy and Signature on the application.