What are the three domains of life and what organisms does each contain?

Domain, in Life Science, is the largest group and the most vague. I consists of three: Bacteria, Archaea, and Eukaryota. After this group, they cluster down smaller and closer in character: Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species. The Archaea Domain is the least group to be found today - morely are organisms found around hot springs, volcanic openings, deep in the sea floor, or any other extreme areas that other organisms wouldn't be able to survive. The Bacteria Domain is very well known today. This consists of the organisms that break down organic matter or attempt to take over other cells and make them sick. The Eukaryota Domain is the other well-known domain which holds animals, plants, fungi, and protists.