substantia nigra
black substance
Steroids is this substance
This is known as an enzyme.
Carbonado is also known as black diamond.
An Enzyme
Fat
Asbestos
Glial cells
Pitch is to throw a ball or the quality of sound governed by the vibrations rate producing it. A pitch is also known as a sticky black residue or substance that is left over from a hot tar.
Any substance that can donate electron is known as electron donor. Also known as reducing agent.
Yes, indeed it was. It was known as black death.
Pele is known as the black pearl.