by: Admin_LouisPosted on: Using the diagram, the part labelled IV is for Using the diagram, the part labelled IV is for A excretion B nourishment C protection D respirationAnswer is C Share this:TwitterFacebookLike this:Like Loading... Related posts:An increase in air pressure in the lungs is due to theThe mammalian vein which starts with and ends in a capillary network is theThe dominant phase in the life cycle of a bryophyte is theClimax communities in a biotic succession are usually characterized by