KEY TERMS ecosystem trophic structure trophic level primary producers primary consumers secondary consumers tertiary consumers decomposers food chain food web primary productivity gross primary productivity net primary production biomass standing crop biomass limiting nutrient secondary productivity ecological efficiency energy pyramid biogeochemical cycle nitrification ammonification denitrification eutrophic biological magnification greenhouse effect biodiversity
(primary production biomass; standing; ) (tertiary consumers decomposers food chain food web primary productivity gross primary productivity net primary production biomass standing crop biomass; limiting; nutrient secondary productivity ecological efficiency energy pyramid biogeochemical cycle nitrification ammonification denitrification eutrophic biological magnification greenhouse effect biodiversity)
primary production biomass tertiary consumers decomposers food chain food web primary productivity gross primary productivity net primary production biomass standing crop biomass
standing limiting
nutrient secondary productivity ecological efficiency energy pyramid biogeochemical cycle nitrification ammonification denitrification eutrophic biological magnification greenhouse effect biodiversity