Please tell fast plz

The production of cells during mitosis into specialized function is recombination or differentiation

How can antibodies "remember" a particular bacterial invader or "antigen" on that invader?

1) what three conditions must be present for minerals to form through natural processes? 2) why are minerals considered inorganic substances? 3) how do oxides differ from other minerals that contain oxygen atoms? 4) how is a sulfide different from a sulfate? what makes native elements unique?