There are 165 major rivers in the world .
Well if you mean what does the controlled part of a scientific investigation, it is the part of the investigation that will be your control or your base, untouched, original, data and such.
That would be B cytokinesis...best way to remember that is both have the root word cyto in them
Answer:
wear a lab apron and safety goggles
Answer:
Maybe cultural. I am not sure though
