Human height is the distance from the bottom of the feet to the top of the head in a human body, standing erect. It is usually measured in centimeters when using the metric system, and feet and inches when using the imperial system. Human height has ...
Hair grows everywhere on the human skin except on the palms of our hands and the soles of our feet, but many hairs are so fine they're virtually invisible. Hair is made up of a protein called keratin that is produced in hair follicles in the outer la...