ECOSYSTEMS AT RISK

• Biotic = living
• Abiotic = non-living
• An ecosystem is a system formed by the interaction of all living organisms (plants, animals, humans) with each other and with the physical elements of the environment in which they live.
• Interdependency = how species rely on each other
• optimum functioning = the ideal state of an ecosystem (requires interdependence)
• bioaccumulative = a cumulative effect which echoes down the food web