Which groups in the domain archaea require high salt concentrations for survival?

Answer:halophiles

Explanation:archaea and bacteria are the types groups of prokaryotes. prokaryotes are organism which lacks membrane bound organelle including the nucleus. as a result, they contain their chromosomes in the nucleoid; a poorly defined region in the cytoplasm.

Archaea and bacteria have several differences including in their cell wall. the cell wall of archaea contains isoprene while that of bacteria contains fatty acid chains.

Archaea are found in extreme environment. The methanogens are obligated anaerobes that produces methane gases and lives in swamps and sewage treatment plants.

The halophiles only lives in water with high salt concentration.

Some lives in acidic and sulphur hot springs and also in ocean depths