In economics, the term marginal<span> is used to indicate the change in some benefit or cost. when an additional unit is produced. For instance, the </span>marginal revenue<span> is the change in. total </span>revenue<span> when an additional unit is produced.</span>
Primates usually have five digits on each limb, with a fibrous protein forming the main structural constituent of nails on the end of each finger and toe. They have sensitive pads on the fingertips on the bottom sides of the hands and feet. Most primates can move toward and touch the other digits on the same thumbs, flat, and short fingernails.
