Final answer:
Choking is a common breathing emergency caused by a mechanical obstruction of the airway. Swallowing large pieces of poorly chewed food, eating too fast, and walking or running with objects in the mouth are common causes of choking.
Step-by-step explanation:
Choking is a common breathing emergency that occurs when there is a mechanical obstruction of the flow of air into the lungs. Some common causes of choking include swallowing large pieces of poorly chewed food, eating while talking excitedly, laughing, or eating too fast, and walking, playing, or running with food or objects in the mouth. These activities can lead to a blockage in the airway, preventing adequate breathing.