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|A medicine used to save lives because it destroys harmful bacteria and cures infection.
|A piece of writing written by a person about his or her own life.
|A piece of writing about a persons life written by someone else.
|A person who studies living things.
|The study of living things.
|The removal of living tissue from the body for diagnostic examination.
|The zone of planet earth where there is life[Between the deep crust and the lower atmosphere]
|A diet thought to help people live longer because it focuses on natural foods.
|The study of the nervous system of living things and how it helps the living things learn to react.
|How two different living organisms live together and depend on each other.