The monomer must be able to form stable covalent chemical bonds between units in order to polymerize.
The term for blue skin caused by lack of oxygen is cyanosis. One is said to be cyanotic when presenting with this discoloration.
Either A or C, however I lean towards C more.
D is obviously not the correct answer as Social Media is typically fairly biased while B is able to be edited by the public.
Hope this helps!
First, you need to do the multiplacation that's inside the perenthises.
Second, you will need to divide the two answers which will give you that first box.
The plant population would grow out of control