Animals are heterotrophic, which suggests they rely upon other organisms—plants and/or other animals—for their food items, as they can not synthesize their very own foods as vegetation do through photosynthesis. Vertebrates make up a self-contained group: the subphylum Vertebrata. Invertebrates belong to many different groups. The skeletons of bony fish https://leew244ifb1.wikiinside.com/user