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  • animals
  • Despite this, the concept of invertebrates as a taxon of animals has persisted for over a century among the laity , and within the zoological community and in its literature it remains in use as a term of convenience for animals that are not members of the Vertebrata. (wikipedia.org)
  • Being animals, invertebrates are heterotrophs, and require sustenance in the form of the consumption of other organisms. (wikipedia.org)
  • food
  • Invertebrates are the planet's biggest source of biodiversity and can be found on every level of the food chain and in every ecosystem on the planet. (fws.gov)