Normally, the body is able to keep the sinuses clean and healthy, despite the dark, moist environment that bacteria love. However, when conditions are right, bacteria can grow out of control in the sinuses, causing a sinus infection. One cause of sinus infections is the common cold.
It has been established that there are two major patterns of human behavior that reflect two modes of brain operation: 1  Survival-Oriented Behavior (SOB). Controlled by primitive areas in the middle of the brain.  Balanced-Empathic Behavior (BEB) .
Learner's definition of SURVIVAL. 1. [noncount] : the state or fact of continuing to live or exist especially in spite of difficult conditions. The refugees depend on foreign aid for their survival. Small businesses are fighting/struggling for survival. the survival of an old folktale.