20-A2.1sts

Students will explain that science and technology have both intended and unintended consequences for humans and the environment: •discuss the influence of human activities on the biogeochemical cycling of phosphorus, sulfur, iron and nitrogen: -feedlot operations -composting -fertilizer applications - waste and sewage disposal -vehicle and refinery emissions -acid deposition -persistent organic pollutants   •discuss the use of water by society, the impact such use has on water quality and quantity in ecosystems, and the need for water purification and conservation: - manufacturing and processing - petrochemical industry - agricultural systems - mining industry - domestic daily water consumption   •analyze the relationship between heavy metals released into the environment and matter exchange in natural food chains/webs and analyze the impact of this relationship on quality of life.