What is Food web?
[[File:Food web nemo.png|thumb|Food web, showing animals eating plants and each other]] A '''food web''' is similar to a [[food chain]] but larger. The [[diagram]] combines many food chains into energy relationships among organisms. Food webs show how [[plant]]s and [[animal]]s are connected in many ways. The arrow points from the organism being eaten to the organism that eats it. A '''food web''' (or '''food cycle''') is a natural interconnection of [[food chain]]s. The two extreme categories ([[trophic level]]s) are: # the [[autotroph]]s, and # the [[heterotroph]]s. A gradient exists: there are different kinds of feeding relations: [[herbivore|herbivory]], [[carnivore|carnivory]], [[scavenger|scavenging]] and [[parasitism]]. Some of the organic matter eaten by heterotrophs, such as [[sugar]]s, provides energy. Autotrophs and heterotrophs come in all sizes, from [[microscopic]] to many [[tonne]]s {{ndash}} from [[cyanobacteria]] to giant [[redwood]]s, and from [[virus]]es to [[blue whale]]s. [[Category:Ecology]] [[Category:Natural resources]] [[Category:Graphics]]