What research method is used in order to establish what causes a behavior? an experiment What is the first step of the scientific method? pose a question In the science of human development, &quot;nurture&quot; refers to: environmental influences.
Vertical lines on one's nails, like those the writer seems to have, are a common phenomenon that often get more pronounced with age. There are many reasons for ridged nails but the most common is aging, says Dr. Phoebe Rich, M.D., FAAD, clinical adjunct professor of dermatology at Oregon Health Science University.
Vertical nail ridges are fairly common and nothing to worry about. Vertical nail ridges extend from the cuticle to the tip of the nail. ... Don't share files and other nail tools, since germs and fungus can travel on them, causing serious infections. ... It's no secret that wind and cold temperatures dry out skin on hands and, in severe cases, cause chapping and ... UV rays disrupt the skin's barrier, which causes water loss ...