What is the name given to the process shown in the diagram

Draw two cyclic constitutional isomers of cis-1

Which substance has non polar covalent bonds

2-bromo-2-methylbutane undergoes an e1 elimination reaction in the presence of ethanol. in the next reaction only one of the possible products is represented. although the product shown is not the major product of the reaction, notice that there is more than one way it can be produced. complete the mechanism and draw the missing substances.