Here's why:
* Prokaryotes are a domain of life that includes bacteria and archaea.
* Eukaryotes, the other domain of life, are organisms with cells that contain a nucleus and other membrane-bound organelles.
* The absence of a nucleus is a defining characteristic of prokaryotes.
Examples of prokaryotes include:
* Bacteria: These are the most common type of prokaryote and are found in almost every environment on Earth.
* Archaea: These are a group of single-celled organisms that are often found in extreme environments, such as hot springs and salt lakes.
Let me know if you'd like to know more about prokaryotes!