How do i know what other fishes to put with my betta or do i just not put any other fish since they are violent ?

Hey me with this one❤☺❤ how do you say that a cell also has a life span and death like an organism? give one example.

How much time has elapsed from the very beginning of "the memior of the conquistador bernal diaz del castillo" to the end? a. castillo's whole life b. a quarter of an hour c. a few weeks d. a decade

Explain how the parts of the peripheral nervous system work with the central nervous system to produce a response to the stimulus