Animals are heterotrophic, which means they depend upon other organisms—crops and/or other animals—for his or her foodstuff, as they can not synthesize their own meals as plants do by way of photosynthesis. The fossil document of animals goes again about 600 million yrs into the Ediacaran period of time, or https://emilionkfzt.mywikiparty.com/1642534/animal_sex_fundamentals_explained