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For most purposes scrolls have long been superseded by the codex book format, but they are still produced for some ceremonial or religious purposes, notably for the Jewish Torah scroll for use in synagogues.
The Aztecs wrote using symbols called glyphs or pictographs. They didn't have an alphabet, but used pictures to represent events, items, or sounds. Only the priests knew how to read and write.They would write on long sheets made of animal skins or plant fibers. An Aztec book is called a codex.t was sacred to the Aztecs and was very important as it divided time equally among the various gods and kept the universe in balance. The calendar had 260 days. Each day was represented by a combination of 21 day signs and thirteen day signs. The other calendar was used to track time.