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Exposition
To prevent valves from falling in to the combustion chamber.
To keep strands of hair from falling into the food.
To keep your butt from falling through the wooden frame.
to generate electricity by utilizing energy of falling water
The original purpose of the welfare benefits system was to prevent people falling into destitution. Pensions are paid to the elderly and out of work benefits to the unemployed, for example.
To make workers aware of the risk, and to keep them alert.
I assume this is a medical question - siderails will prevent a patient from falling out of bed.
The purpose of suspender belts are to hold ones pants up and keep them from falling. Many men wear suspender belts as a fashion accessory, underneath a formal suit.
Because the only way to move, other than falling down, is to use your muscles. That is their purpose.
to show that he cares about his parents and was sorry to disappoint them
god made it like that for a purpose. maybe to protect them from falling objects.....we never know