What do organisms in Kingdom Eubacteria have in common?

A.) They live in less extreme environments than most archaebacteria.

B.) They live in the hottest and coldest places on Earth.

C.) They are multicellular.

D.) They live without oxygen.

A

Explanation:

Archaebacteria, meaning "old bacteria," are grouped like that because of DNA differences and because they live in extreme environments, like salty, very hot, or very cold.

Eubacteria, meaning "true bacteria," are grouped separately from archaebacteria because they do not exhibit those traits. Living in extreme environments is a characteristic of archaea.

Why not B: this describes archaebacteria.

Why not C: bacteria are unicellular, though they can aggregate into groups.

Why not D: they can be anaerobic or aerobic (use oxygen).