Answer:
Archaebacteria are much alike to Eubacteria.
Step-by-step explanation:
Archaebacteria are very similar to Bacteria with respect to their cell size, prokaryotic organisation,circular DNA etc.
Archaebacteria very similar to Gram-positive bacteria on the basis of cell structure.
Both bacteria and Archaebacteria have several similar Metabolic Pathways.
Unlike Bacteria Archaebacteria are habitants of extreme climates like hot springs and ice capped continents.
Thus, Archaebacteria are much alike to Eubacteria.