The United Illuminating Company (UI) is a regional electric distribution company based in Orange, Connecticut.
Although generally not visible to the naked eye, organisms composed of prokaryotic cells still dominate the earth. Their collective mass is at least 10 times greater than the mass of all eukaryotes combined. Organisms composed of prokaryotic cells are classified into 2 main groups: archaea and bacteria. Archaea most closely resemble the first primitive cells on our planet.
The kingdom protista contains varieties of eukaryotic organisms, some single celled, some multicellular, and still others live in a colony of cells. For instance, the Kingdom Protista contains the groups of organisms that are one-celled protozoa, one-celled algae, slime molds and water molds.