said as short as possible What are the main characteristics of the following: Archaea, Bacteria, Eukarya and Viruses?

Archaea: Prokaryotic microorganisms, live in extreme environments.

Bacteria: Prokaryotic microorganisms, diverse shapes and sizes.
Eukarya: Eukaryotic organisms, have membrane-bound organelles.
Viruses: Protein-coated genetic material, replicate inside host cells.