because you don't take care of them
no,
so that we don't eat the germs which we touch along with our food and get sick. and fingernails are made up of dead skin
NO BUT CLEAR NAIL POLISH DOES
drink more calcium
no
Polystyrene. the opaque white cups that you can make fingernails impressions in, are foamed polystyrene. Clear sups that you get on an airplane are general-purpose polystyrene.
The white area in fingernails and hair are caused by air. That's why snow is white and not blue. Little bumps and bruises that are done to the bed of the nail cause these imperfections.
Cutting your fingernails is a physical change because the composition of the material (keratin) remains the same before and after cutting. A chemical change involves a change in the chemical composition of a substance.
This might be because you dont drink enough milk !
Its not a lack of calcium. Its just simple Bruses on the nails
osteoporosis and the white tick lines on your fingernails !
There are many myths surrounding those mysterious white spots on fingernails that occasionally show up, but the simple truth is that the majority of white spots on fingernails are caused by a previous injury to the nail bed. They can be loosely compared to bruises on the skin. If you notice white spots, also known as leukonychia, on your nails, they are unlikely to have been caused by a vitamin or mineral deficiency. In a few cases, white spots on fingernails can indicate an underlying infection, but much more commonly, they are the result of injury. Similar to bruising, white spots on fingernails do not show up immediately. It may take several days or weeks before you notice the spots. Because they are generally the result of a minor injury, you are likely to have forgotten all about banging your fingernail against the car door.