Answer:

SCI

AnswerCrossword Clue
SCIBio, for one
SCIFi front
SCIHigh school subj.
SCI...-fi (literary genre)
SCIBot. or biol.
SCIMIT forte
SCI... -fi
SCIBiol., for one
SCIPoli follower
SCISubj. doubted by creationists
SCIBiol. or chem.
SCI..-fi
SCIBill Nye's subj.
SCIPoli-...
SCISchool subj.
SCIChem. or phys.
SCIH.S. course
SCIH.S. subject
SCIBiol. or anat.
SCIGeol. or biol.
SCITech., e.g.
SCI"Mythbusters" subj.
SCI"MythBusters" subj.
SCIEcol. or geol.
SCINova subj.
SCIFi preceder
SCIPoli ...
SCIHalf of B.S.
SCIPart of B.S.
SCITech. counterpart
SCIFi lead-in
SCILab subj.
SCIBill Nye subj.
SCIBiol., e.g.
SCIChem. or biol.
SCIPoli ..
SCIChem., for one
SCIArtillery, e.g.: Abbr.
SCIBot. or chem.
SCISubject with projects: Abbr.