Answer:
1. multicellular - an organism that is made up of many cells
2. unicellular - an organism that is made up of a single cell
3. archaea - a domain of organisms that are unicellular, prokaryotic organisms that live in diverse environments
4. EUbacteria - a kingdom of organisms that are unicellular, prokaryotic organisms that often live in extreme environments (CHECK BELOW AT EXPLANATION PLEASE; IMPORTANT!)
5. prokaryotic - unicellular organisms that do not have a nucleus
Step-by-step explanation:
1. Multicellular organisms include things such as plants, animals, reptiles, amphibians, etc. and they are made up of more than one cell. So, a multicellular organism is an organism that is made up of many cells.
2. Unicellular organisms are things such as bacteria, archaea, etc. and have only one cell ("uni" means "one"). So, a unicellular organism is an organism that is made up of a single cell.
3. In taxonomy, archaea is one of the domains, the other two being bacteria and eukarya. Archaea are prokaryotic, so the answer is that archaea is a domain of organisms that are unicellular, prokaryotic organisms that live in diverse environments.
4. I don't know if this is a mistake you could have made in typing the answers, but basically, in taxonomy, eubacteria is the kingdom of the domain bacteria. So, since only one of the definitions (i assume) mentions kingdom, eubacteria is a KINGDOM of organisms hat are unicellular, prokaryotic organisms that often live in extreme environments. If I am mistaken and it is actually bacteria, it would be a domain of organisms that are unicellular, prokaryotic organisms that live in diverse environments since bacteria is one of the three domains in the classification named taxonomy.
5. Prokaryotic organisms consists of organisms that are unicellular and have no nucleus, so the only option would be prokaryotic meaning unicellular organisms that do not have a nucleus.