Complex sentence: By the early 1960s, the Alabama Zoological Society was created as a non-profit support group to raise funds to supplement the escalating operational necessities, since funding for the zoo was inadequate to maintain and operate it at acceptable professional standards.
Split into simpler sentences: By the early 1960s, the Alabama Zoological Society was created as a non-profit support group to raise funds to supplement the escalating operational necessities. The sources of funding for the zoo was inadequate to maintain and operate it at acceptable professional standards.