Both drugs had been previously recommended for approval 14-0 by members of FDA's Anti-Infective Drugs Advisory Committee. The significance of two new antibiotics in four weeks? We've recently been averaging one antibiotic every three years.
More melanin presence in the skin makes the skin appear black, and less melanin will make the skin appear less black. White people have very little melanin synthesized by their skin. So, the color of the races is because of some difference in the quanitity of the melanin pigment in our body. That is all.
Melanin is brown.. the more Melanin, the darker the skin, eyes, or hair. Dark brown eyes may appear to be black, but they are not, they are brown. Also the brown hair and eyes are believed to be originated from Asia, as Asia is where the oldest human ancestor has been found (it was originally thought to be Africa)..not in Europe.rown hair and eyes and olive-white skin tones were the first mutation to the white race. Africans â¦ and Asians have naturally black hair, black-colored eyes (no visible brown at all) and very dark or black skin tones.