Answer:
BDEG
Explanation:
got it right on the test on edge because i used my b r a i n
In order to understand a monomer let´s first see the structure of a polymer. As an example, in the first figure polyethylene (or polyethene) is shown. This polymer, like every other one, is composed of many repeated subunits, these subunits are called monomer. In the second figure, polyethylene's monomer is shown.
That is a thread ball valves