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 ?

Which of the following protists gets nutrients mainly by absorbing molecules from other organisms through their cell walls and cell membranes? a. amoebas b. water molds c. ciliates d. slime molds

What do scientists need to look at before developing an argument

In general, characteristics that an organism survive and reproduce become more common over time. what mechanism of evolution causes this?