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antibiotic

a medicine used to save lives because it destroys harmful bacteria and cures infection

biosphere

the zone of planed Earth where there is life (between the deep crust and the lower atmosphere)

autobiography

a piece of writing written by a person about his or her own life

biography

a piece of writing about a person's life written by someone else

biologists

a person who studies living things

biology

the study of living things

revitalize

to bring something back after it declined in condition or popularity; to breathe new life into something

revive

to bring back to life again

survival

the ability to continue living

survivor

a person who lives through a difficult event or experience

vital

necessary or essential to life

vitality

quality or state of being full of life; sate of being full of energy

vitamin

a tablet of substances that are thought to promote a healthy life

vivacious

full of life; fun; lively; animated

vivid

"as big as life" brightly colored, daring

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