Biologists classify organisms to organize and keep track of the enormous variety of life forms, to better understand evolutionary distances, and to examine the relationships between organisms. Life on earth is incredibly... More » Science Biology Zoology

Kingdom Protista includes mostly unicellular, eukaryotic life forms that behave similar to animals, plants and fungi based upon how the organisms obtain nutrition from their environment. These creatures do not fit into o... More » Science Biology Zoology

Cladograms are used to show evolutionary relationships among organisms. A cladogram consists of a line with Y-shaped branches or forks. Each branch is labeled with a special characteristic that separates the organisms to... More » Science Biology Zoology
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