Earth has 2,500,000 species in many categories {classification, biology}. Earliest life was one-celled organisms. Archaea included thermophiles. Bacteria included proteobacteria and later cyanobacteria blue-green algae. Eukaryota included metamonad, parabasalid, trypanosoma, ciliates, and flagellates. Multicellular organisms arose from eukaryotes.
Biological Sciences>Biology>Evolution>Classification
4-Biology-Evolution-Classification
Outline of Knowledge Database Home Page
Description of Outline of Knowledge Database
Date Modified: 2022.0224