Likewise, if the population consists of equal numbers of males and females, and if the females give birth to 3 children each (and the males 0), then the average birth rate of the population will be 1.5. With these basics we can now consider two simple models of population growth:
For most purposes scrolls have long been superseded by the codex book format, but they are still produced for some ceremonial or religious purposes, notably for the Jewish Torah scroll for use in synagogues.
1A roll of parchment or paper for writing on. âA few sums scratched on a papyrus scroll would do the trick.â. âI'd already discovered poems of his hanging like little scrolls on the wall of a new friend's room.â. âMonks scribbled personal details in bound volumes or unfurled wispy scrolls.â.