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world(noun, nature, environment, ecology, ecosystem)
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eco(adjective, green, biological, environmental, ecological)
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APASmart Define. (2015). eco-friendly thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/eco-friendly/thesaurus/broader
ChicagoSmart Define. 2015. "eco-friendly thesaurus" https://smartdefine.org/eco-friendly/thesaurus/broader (accessed September 24, 2026).
HarvardSmart Define 2015, eco-friendly thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/eco-friendly/thesaurus/broader>.
MLASmart Define. "eco-friendly thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/eco-friendly/thesaurus/broader>