What is corrosive and can severely burn skin?

Is popping in the belly normal? What carries motor responses from the central nervous system to muscles glands and other organs? Can pregnancy occur a few days before your menses? Fuses the frontal and parietal bones together? What is the most important thing when you are running? How much smoke remains in your lungs when you exhale? If I had a miscarriage and was trying to get pregnant again and i got my period could that be the last period of my pregnancy and having symptoms of pregnancy? Would STD screening detect pelvic inflammatory disease? Incubation period of African sleeping sickness? In the human nervous system what is synapse? Is FSH the same as testosterone? Is corona a alcoholic drink? What is the meaning of right eye blinking? What happens to the baby if its ectopic? How strong are dentures? Can you take a darvaset being pregnant? What is the most common type of special district? Is benign prostiatic hyperplasia characterized by varicocele? How many diovan pills will it take to die? Would the bones of the pelvis be fused in the female child's skeleton If not then when do the pelvic bones fuse?