Taxonomic systems used by biologists are hierarchical; that is, (a) taxonomic groups reflect sha...

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Taxonomic systems used by biologists are hierarchical; that is,
(a) taxonomic groups reflect shared characters, not evolutionary relationships.
(b) each higher taxonomic group contains all the groups below it.
(c) taxonomic groups reflect common habitats.
(d) a hierarchy of traits is used to establish classifications.
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