The construction of food chains and webs could not be simpler. Construct hundreds of food chains and webs over 25 years using the 30 organisms available. Investigate the influence of introduced species - control rainfall - cause droughts or much needed rain - allow bushfires or introduce farming into the ecosystem. Animal migration can be turned on or off. Teacher controlled report options allows you to control direct student feedback. Reports can be printed at end of exercise. (Great for testing). Graphs of modelled data include biomass pyramid with consumers levels. View and printout seasonal and yearly data. Save data as text files which can be loaded into spreadsheets etc for analysis later. Complete with site license - teacher resources and life-time upgrades.