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bio = life

Across
The study of the nervous system of living things and how it helps the living things learn and react.
A piece of writing about a person’s life written by someone else.
The zone of planet 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 living things
Down
A piece of writing written by a person about his or her own life.
How two different organisms live together and depend on each other.
The removal of living tissue from the body for diagnostic examination.
A medicine used to save lives because it destroys harmful bacteria and cures infections.
A person who studies living things.