food chain- grass-deer-human a food chain is a primary source (plant) being eaten by a secondary source (deer) which, in return, is eaten or, in this case-killed by the next higher up rank. (the...
humans are at the top of the food chain because we aren't hunted by any other animal. in the wild tigers eat hyenas hyenas eat rabbits etc. The lifestyle of each specie depending on an other specie...