Air in the chest (Thorax) causes the lung to collapse. This can be spontaneous or after chest injuries
When you stand for a long time, it may cause your knees to buckle resulting in a vaso-vagal reaction. When this happens, there is a decrease in blood pressure which can make a person collapse or faint.
If they are cold
Hyper-resonance (generally described upon percussion of the chest) is typically seen in Pneumothorax, where an accumulation of air in the pleural space causes compression / collapse of the lung on the affected side. Note that hyper-resonance is a late sign, and is seen infrequently.
A civilization can collapse for many causes such as drought, disease or being conquered.
Colony collapse is when bees mysteriously disappear. Vampire mites and nicotine-based insecticides are among the possible causes.
Causes of collapse for which rescue breathing may be needed are anaphylactic shock, heart attack, and poisoning.
Same as any cave collapse: erosion weakening the surrounding rock.
the cause of structures to collapse during earthquakes are upheavals of tectonic plates..
The collapse of a star is based on its age. When it runs out of "Fuel" its inside contracts as the outside expands. it can then super nova or collapse into a tiny star.