Assertion: evolution | /r/HasProperty | progressive
Facets:
value: for several reasons
type: CAUSE
Source sentences:
text: By the mid-1870s, most scientists accepted evolution, but relegated natural selection to a minor role as they believed evolution was purposeful and progressive.
text: One important mechanism of evolution, natural selection, does result in the evolution of improved abilities to survive and reproduce; however, this does not mean that evolution is progressive  for several reasons.