The document discusses the classification of living things. It defines classification as grouping organisms according to similar characteristics. There are eight major classification groups from broadest to most specific: domain, kingdom, phylum, class, order, family, genus, and species. The document provides examples of how organisms like dogs and lions would be classified, as well as plants like pine trees. It also defines important biological terms like autotroph, heterotroph, prokaryote, and eukaryote.
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