What are bacteria that live in extreme conditions called? Protista
Archaebacteria
Fungi
Eubacteria

Archaebacteria are the prokaryotic bacteria which lives in extreme conditions.

such as so cold as well as hottest environment, something special about them is that the form an strong outer covering for themselves which protects it from unfavorable condition and when it gets out of an unfavourable conditions , they come out of that covering , they are also known as one of the most old prokaryotes.

clinically, some people often have repeated allergies, eczema and respiratory infections or other parts of the infection, in this case, in addition to some routine tests such as tests for white blood cells, immunoglobulin series, lymphocyte subsets, etc., the five immune immunoglobulin tests are also necessary.