Fingernails do not typically turn black after death; rather, they may appear darker due to changes in blood circulation and tissue decomposition. As the body begins to break down, the skin can change color, which may give the appearance of darkening around the nails. However, the actual nails themselves generally remain their original color unless affected by other factors, such as injury prior to death. Overall, visible changes can start within hours to days after death.
It depends on how old you are and what your life expectancy is. Human eyes will not turn black during a person's life.
Betacarotene found in fruits and vegetables can cause fingernails to turn orange when taken in high quantities.
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In a very polluted atmosphere, such as might be produced by burning oil with a lot of sulfur in in, a penny could turn black in a few hours. Put away and protected, it will take decades or longer.
Nails are made up of keratin like hair. The blood supply for the fingernails and toenails is at the base or growth area. If the base of the nails is damaged then the entire nail will turn black and die and fall off. If the damage is not permanent a new nail will grow from the base. Fingernails take about 5 months to grow from base to fingertip, toenails take about 1 year to totally regrow.
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It takes all of 0 seconds. Being born black means they don't "turn" black but are born black. The baby may only seem lighter because of the enclosed space it was in for 9 months and all of the fluids covering it.
Long fingernails definitely create a little drag. The more surface area you have on the front of your body, the slower you go. If your fingernails are painted that gives the officials an advantage to disqualify you. They are able to see if your hands touch at the same time or not during an event with an open turn.
If you wear allot of any nail polish it can turn your nails yellow if you have it on for too long. And why do you wear so much black nail polish? It's not really in anymore maybe go for a more light color like light pink or green
If a black hole has spin, it will spin forever.
After death, blood circulation stops, causing blood to pool in the capillaries under the fingernails. This pooling of deoxygenated blood can give the fingernails a bluish appearance due to lack of oxygen.
they have a certain bacteria that's fights it so there teeth stay white but if the teeth go black the fall out and that would take at least a year