Animals are heterotrophic, meaning they rely on other organisms—plants and/or other animals—for their foodstuff, as they can't synthesize their own individual food as vegetation do by means of photosynthesis. The fossil document of animals goes again about 600 million yrs for the Ediacaran period, or rather previously. A crustacean’s physique https://williamx233dzt8.dailyhitblog.com/profile