What is the meaning of invariable rise?

How many days does the free period last? Is Tay Sachs disease a dominant lethal allele? Do nose piercings stretch as people age leaving big holes in a nostril? How to cure aids? How long does the Rhinovirus remain active outside the human body? Is elixir thicker than syrup? How can you avoid drinking amounts that will affect your judgment? Can penicillen get rid of clymida? What does Thomas Paine and Thomas Jefferson have in common? What is heat period in women? Is liver good to eat? Is Salkowski test specific for cholesterol? Why does the job of the immune system make a more difficult on the skin is damaged (such as from a large open wound or a severe burn)? What could you give a 9 month old for a severe cough fever and rash? Can a urinary tract infection cause a negative result? Infertile woman is called? Where is seamen stored? Why is a foley catheter placed prior to a cesarean section? What is the name of the hormone that make your heart beat faster and directs more blood to your muscle? A major viral disease transmitted during food preparation is?