A predator is an organism that hunts and kills prey for food
Because: Some of the work done by the machine is used to overcome the friction created by the use of the machine. ... Work output can never be greater than work input. Machines allow force to be applied over a greater distance, which means that less force will be needed for the same amount of work.
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Answer:
a reflex
Explanation:
an example of this world be how fast you react to something such a doctor hitting your knee to test your reflex and your leg moving up