A). Meperidine requires a follow up cover prescription.
A - vitamin a
VAD (vitamin A deficiency) is sadly a major cause of permanent blindness in children...
Memory loss is not part of physical change by aging
PH is a scale used to specify the acidity or basicity of an aqueous solution. Acidic solutions are measured to have lower pH values than basic or alkaline solutions. They use pH strips to test soaps, the best is between 5.5 & 6.5 .
