However, the organisms traditionally grouped within the kingdom Monera are now classified into two separate domains:
1. Bacteria: These are single-celled prokaryotes (lacking a nucleus) with diverse metabolic capabilities. They are found in almost every environment on Earth.
2. Archaea: Also single-celled prokaryotes, archaea are often found in extreme environments like hot springs or highly saline environments. They have unique biochemistry and are thought to be more closely related to eukaryotes (organisms with a nucleus) than bacteria.
Therefore, while the term "Monera" is no longer used, the two types of organisms traditionally included within it are bacteria and archaea.
