IB Environmental Systems and Societies Definitions Questions with Complete Solutions

Abiotic Factor - A non-living, physical factor that may influence an organism or ecosystem; i.e. temperature, sunlight, pH, salinity, precipitation Biochemical Oxygen Demand (BOD) - A measure of the amount of dissolved oxygen required to break down the organic material in a given volume of water through aerobic biological activity Biodegradable - Capable of being broken down by natural biological processes; i.e. the activities of decomposer organismsAbiotic Factor - A non-living, physical factor that may influence an organism or ecosystem; i.e. temperature, sunlight, pH, salinity, precipitation Biochemical Oxygen Demand (BOD) - A measure of the amount of dissolved oxygen required to break down the organic material in a given volume of water through aerobic biological activity Biodegradable - Capable of being broken down by natural biological processes; i.e. the activities of decomposer organisms