Nerve cells are necessary when animal cells specialize and the whole complex organism needs to respond quickly to environmental change.
(Nerve cells; are; necessary; T:when animal cells specialize and the whole complex organism needs to respond quickly to environmental change) (animal cells; specialize; ) (the whole complex organism; needs; to respond quickly to environmental change) Context(the whole complex organism needs,List([59, 91))):(the whole complex organism; needs to respond quickly; to environmental change)
the whole complex organism needs,List([59, 91))
Nerve cells animal cells the whole complex organism the whole complex organism
are specialize needs needs to respond quickly
necessary T:when animal cells specialize and the whole complex organism needs to respond quickly to environmental change
to respond quickly to environmental change
to environmental change