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Unit Two: Vocabulary. COMMON ROOTS. act. To do, drive ACTION, ACTOR, REACT, ENACT. ann , enn. Year Annual, perennial, bicentennial. a ster, astro. Star Astronomy, astronomical, asterisk. aud. To hear Audience, auditorium, audible. bio. Life Biology, biochemistry, biodegradable. - PowerPoint PPT Presentation
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Unit Two: VocabularyCOMMON ROOTS
To do, drive
ACTION, ACTOR, REACT, ENACT
act
Year
Annual, perennial, bicentennial
ann, enn
Star
Astronomy, astronomical, asterisk
aster, astro
To hear
Audience, auditorium, audible
aud
Life
Biology, biochemistry, biodegradable
bio
To yield
Intercede, concede, secede
cede
Time
Chronology, chronometer, chronoscope
chrono
Around
Circumference, circle, circular, circumvent
circ, circum
To trust, believe
Credible, incredible, credit, credential
cred
People
Democracy, demographic, epidemic
dem
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