What part of a cell is responsible for breaking down organic molecules? what part of a cell digests foreign substances or worn parts?

Cells tend to have a relatively small and uniform size. why aren’t cells larger?

In a cladogram' when does a group of organisms branch off

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?