Animals are heterotrophic, which means they rely upon other organisms—crops and/or other animals—for his or her food, as they cannot synthesize their own foods as plants do via photosynthesis. Vertebrates make up a self-contained team: the subphylum Vertebrata. Invertebrates belong to numerous teams. Caecilians are burrowing animals that resemble worms https://animalhdporn83826.wikiadvocate.com/6982610/animal_porn_fundamentals_explained