An organism has the following characteristics: cell wall, heterotrophic, unicellular, and prokaryote. what kingdom does it
belong in?

Kingdom Monera

Explanation:

The organism is likely to be a bacteria. They are unicellular organisms that occur singularly or in colonies. The nuclear material is not enclosed within a nuclear membrane hence said to be prokaryotic. Most of them are heterotrophic. They have a cell wall made up of proteins and sugars rather than cellulose as in the case with green plants.

clumped distribution, because you'de have all of the population gathered in a relatively small are.

it's the most common because it provides protection and a mate for reproduction

example: humans, seeweed, cattles, etc.