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For most purposes scrolls have long been superseded by the codex book format, but they are still produced for some ceremonial or religious purposes, notably for the Jewish Torah scroll for use in synagogues.
And scroll lock. it doesn't do much anymore. according to wikipedia it was orriginally used to allow you to scroll in word documents instead of having to page the typing curser doen. but that doesn't work any more. The only program that still uses a scroll lock is apearantly excel.