Vitamin B is required in your body for a number of reasons. Like phosphorus, some forms of vitamin B regulate your energy, while others improve your mental capacity and your emotional stability. Phosphorus is necessary for your body to take in vitamin B and use the many forms of it properly within the body.
Structural functionalism, or simply functionalism, is a framework for building theory that sees society as a complex system whose parts work together to promote solidarity and stability.
Functionalism is a theory about the nature of mental states. According to functionalism, mental states are identified by what they do rather than by what they are made of. This can be understood by thinking about artifacts like mousetraps and keys. In particular, the original motivation for functionalism comes from the helpful comparison of minds with computers.