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| the primary subdivision of a taxonomic kingdom, grouping together all classes of organisms that have the same body plan |
| based on arbitrary, superficial characteristics rather than natural, organic relationships |
fertility fer·til·i·ty (fər-tĭl'ĭ-tē)
n.
The state of being fertile, especially the ability to produce young.
fertile (fûr'tl) Pronunciation Key
fertility noun |