This lecture discusses impact categories contributing to the quality of ecosystems, focusing on evaluating life cycle impacts. Topics include environmental interventions, elemental flows, climate change, ozone depletion, fine particle formation, toxic effects, acidification, eutrophication, land use, water use, resource consumption, marine bottom use, and noise pollution. The lecture also covers ecotoxicity, acidification's environmental issues, pollutants causing soil and water acidification, eutrophication problems, and land use impacts on biodiversity.