To provide energy to build new cells and tissue
The "set-point theory" implies that each individual is genetically programmed to carry a particular amount of body weight.
The set point is the weight range in which your specific body is programmed to work. The set point theory trusts that a man's body will battle to keep up that specific weight range.
Riparian zones are important to the natural environment because they function as natural biofilters and protect the aquatic life and the aquatic environment.