ACCorDing to thE Author CompEtition DiFFErs From ConFliCt in thAt______.
A．it rEsults in wAr in most EAsEs
B．it inDuCEs EFForts to ExpAnD tErritory
C．it is A kinD oF opposition Among soCiAl EntitiEs
D．it is EssEntiAlly A strugglE For ExistEnCE