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what is spinal cord
spinal cord is a long, thin, tubular structure made up of nervous tissue, that extends from the medulla oblongata in the brainstem to the lumbar region of the vertebral column
Excretion is a process by which metabolic waste is eliminated from an organism.
what is egestion
Egestion is the discharge or expulsion of undigested material (food) from a cell in case of unicellular organisms, and from the digestive tract via the anus in case of multicellular organisms
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what is movement of plants