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Some organisms can regrow damaged or lost body parts like a starfish. Regeneration is the process that uses cell division to regrow body parts. Regeneration is the ability to replace damaged or missing body parts. For example, once an Elk looses its antlers, each year, they grow new ones.
regeneration
a starfish is missing a few body parts like fins and tails
Your central nervous system controls your entire body via the spinal cord.
Prostheses are mechanical devices used to replace missing body parts. People usually think of prosthetics as artificial limbs. However, hearing aids and dentures are also considered to be prosthetics.
starfish sponges sea cucumber others
no
Hormone supplements are a pill or treatment to replace or fill in missing hormones in your body.
regeneration
Part of his nose, his eye, and his leg
regeneration