Why does a oceanic plate tend to subduct when it collides with a continental plate

How do you convert 4 mmol of bromobenzene to ml?

Consider a culture medium on which only gram-positive organisms such as staphylococcus aureus colonies can grow due to an elevated nacl level. a yellow halo surrounds the growth, indicating the bacterium fermented a sugar in the medium, decreasing the ph as a result and changing the color of a ph indicator chemical. this type of medium would be referred to as a differential and enrichment culture.

What conclusion can you draw from this experiment about the components of the black ink?