The answer lies between the physical structure of the hair.
One is Heredity. These are genes that each person inherits from their parents.
It's not only a difference between just African Americans and Caucasians, hair is different with all races such as African Americans, Caucasians and Asians.
We all have a different diameter of pigment and structure with our hair which will vary.
The difference is that high contrast has more black and low contrast has more white.
The photon sphere is a sphere above the event horizon in which light orbits the black hole.
Jet is a form of coal (lignite); onyx is a variety of silicon dioxide.
Largely the difference between a Schwarzchild black hole and a Kerr black hole is about spin; the Schwarzchild model is not spinning, and is modeled to have a spherical shape and point-like singularity. The Kerr model by contrast has significant spin which would give rise to a ring-shaped singularity and also the ergosphere, having a oblate spheroidal shape.
Gold will have a gold metallic streak, and Fool's Gold (pyrite) will have a greenish black streak.
The only difference is melanin content which is irrelevant. There are no others.
by looking at the skin
No. She was born in Connecticut to Caucasian parents, so she is Caucasian.
No, she is caucasian.
No, she is not black. She is caucasian(white).
No. He is Caucasian.
No, Madonna is Caucasian.
No, she is caucasian.
the difference is ( It is & He is )
Caucasian
The difference is that the black on is more powerful then the yellow.
The main difference between an albino and a black sheep, is the pigment of their coat. Albino sheep have no pigment, where as black sheep are colored (black).