Urinary incontinence and, less commonly, fecal incontinence, plague some new mothers shortly after giving birth. The inadvertent passage of urine, especially when laughing, coughing or straining, usually is caused by the stretching of the base of the bladder during pregnancy and delivery.
Best Answer: The focus of an earthquake is the point beneath Earth's surface where rock breaks under stress and the plates shift and that is what causes the earthquake. An earthquake is when the surface of the earth is shaking because of rapid movement of the rocky outer layer of the earth.
earthquake. n. 1. (Geological Science) a sudden release of energy in the earth's crust or upper mantle, usually caused by movement along a fault plane or by volcanic activity and resulting in the generation of seismic waves which can be destructive. sudden movement of the Earth's crust. Earthquakes are caused by the release of built-up stress within rocks along geologic faults or by the movement of magma in volcanic areas. They are usually followed by aftershocks. See Note at fault.