2 entries under theory topic. ×
| natural selection(noun, expression, evolution, adaptation) | |
| survival of the fittest(noun, expression, idiom, evolution) |
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| APA | Smart Define. (2013). natural law thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/natural_law/thesaurus/synonyms |
| Chicago | Smart Define. 2013. "natural law thesaurus" https://smartdefine.org/natural_law/thesaurus/synonyms (accessed October 1, 2026). |
| Harvard | Smart Define 2013, natural law thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/natural_law/thesaurus/synonyms>. |
| MLA | Smart Define. "natural law thesaurus" 18 May 2013. Web. 1 October 2026. <https://smartdefine.org/natural_law/thesaurus/synonyms> |