Animals are heterotrophic, meaning they rely upon other organisms—plants and/or other animals—for his or her foods, as they can't synthesize their own individual food items as crops do by means of photosynthesis. The fossil record of animals goes again about 600 million decades to the Ediacaran interval, or considerably earlier. https://animal-porn74948.elbloglibre.com/36368859/animal-porn-no-further-a-mystery