Why does your hair turn white when you get older?

Why does your hair turn white when you get older?

As we get older, the pigment cells in our hair follicles gradually die. When there are fewer pigment cells in a hair follicle, that strand of hair will no longer contain as much melanin and will become a more transparent color — like gray, silver, or white — as it grows.

What oath does a doctor take?

Hippocratic Oath: Modern Version. I swear to fulfill, to the best of my ability and judgment, this covenant: I will respect the hard-won scientific gains of those physicians in whose steps I walk, and gladly share such knowledge as is mine with those who are to follow.

Is a mongoose immune to snake venom?

The Indian gray mongoose and others are well known for their ability to fight and kill venomous snakes, particularly cobras. They are adept at such tasks due to their agility, thick coats, and acetylcholine receptors, which render them resistant or immune to snake venom.

What causes the color of the red sea?

Located between the East African coast and the Saudi Arabian peninsula, the Red Sea got its name because of a type of algae called Trichodesmium erythraeum, which is found in the sea. When these blooms of algae die off they appear to turn the blue-green color of the ocean to a reddish-brown.

What does it mean to eat crow?

Eating crow is an American colloquial idiom, meaning humiliation by admitting wrongness or having been proved wrong after taking a strong position. [ 2] Crow is presumably foul-tasting in the same way that being proved wrong might be emotionally hard to swallow.

Why is the number 4 unlucky?

Number 4 (四; accounting 肆; pinyin sì) is considered an unlucky number in Chinese because it is nearly homophonous to the word “death” (死 pinyin sǐ). Due to that, many numbered product lines skip the “4”: e.g., Nokia cell phones (there is no series beginning with a 4), Palm PDAs, Canon PowerShot G’s series

Is sodium chloride salt?

Sodium chloride, also known as salt, common salt, table salt or halite, is an ionic compound with the chemical formula NaCl, representing equal proportions of sodium and chlorine. Sodium chloride is the salt most responsible for the salinity of the ocean and of the extracellular fluid of many multicellular organisms.

Who flew the first plane in the world?

Orville and Wilbur Wright designed and flew their Flyer plane in December 1903. Five people were said to have witnessed the flight including John T. Daniels who took photographic evidence. Claims that Whitehead beat the Wright Brothers to the record first emerged in 1937.