20 !
why do you think oil floats on top of water instead of mixing with it?

What do all macromolecules have in common with each other? oa. they all are formed from the same elements. ob. they all have major roles in cell membranesoc. they all act as catalysts in the body. od. they all have peptide bonds between carbon atoms.

Which part of cellular respiration must occur before any of the other steps can occur

The picture shows a fishing technique called trawling. how might trawling affect marine biodiversity