by: Admin_LouisPosted on: The substance labelled II originates from The substance labelled II originates from A III only B IV only C I and IV D III and IvAnswer is A Share this:TwitterFacebookLike this:Like Loading... Related posts:A characteristic of vertebrates that is unique to mammals isThe inner ear contains two main organs, namely, theAtmospheric nitrogen is converted to soil nitrogen for plant use byThe factors that determine the distribution of vegetation zones are