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...Higher environmental science unit living environment revision notes ecosystem definitions species organismswhich canbreed successfully and produce fertile offspring population a group of organisms the same habitat place where an organism lives community alloftheanimasandplantsinahabitat it can also be described as all things together with non niche is role occupied by in what eats preys onit e g tree bark ecology study ecosystems relationship between their food chains webs thesourceofenergyforafoodchain web always sun afood chain shows which pass on energy feeding thearrows indicate direction flow oak leaf eating insect shrew fox possible relationships or theowl top predator this levels within are knownastrophiclevels aheterotroph consumer means animal depends other plants animals for its there types carnivores prey omnivores eat both herbivores only term autotroph primary producer green plant able to produceits own photosynthesis transfers flows through lot lost usually maximum ofener...