Interfaces in Object Oriented Programming Languages. An interface is a programming structure/syntax that allows the computer to enforce certain properties on an object (class). For example, say we have a car class and a scooter class and a truck class. Each of these three classes should have a start_engine() action.
The epidermis is the very outer layer of the skin that provides protection from bacteria (thanks to it's pH level), becoming overloaded with water (it's waterproof) and from heat loss. It has four of five distinct layers to achieve this.
The skin is composed of two layers known as the epidermis and dermis. The epidermis, or outer layer of the skin, acts as the skinâs primary defense against the environment. As a result, these layers sustain the most damage. The dermis, or innermost layer, is responsible for providing structure and support to the skin.