Why Does Skin Color Vary?
Why Does Skin Color Vary? People vary in the color of their skin because of a network of pigment-forming cells called melancoytes. This netw
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Pigment
What Makes Eyes Different Colors?
What Makes Eyes Different Colors? What a baby is going to look like depends on the 46 genes in his body cells. Half of these genes he inheri
What Is a Tattoo?
A tattoo is a marking made by inserting indelible ink into the layer of skin to change the pigment for decorative or other reasons. Tattoos
What Is Indelible Ink?
What Is Indelible Ink? Electoral ink, indelible ink, electoral stain or phosphoric ink is a semi-permanent ink or dye that is applied to the
When Does a Chameleon Change Color?
When Does a Chameleon Change Color? A chameleon will change color when it senses danger. This remarkable member of the lizard family can cha