Ecosystem workbook + presentation - Alberta 7 Science - Interactions &Ecosystems

Students will:

2. Trace and interpret the flow of energy and materials within an ecosystem

• analyze an ecosystem to identify biotic and abiotic components, and describe interactions among these components
• analyze ecosystems to identify producers, consumers and decomposers; and describe how energy is supplied to and flows through a food web, by:
• − describing and giving examples of energy and nutrient storage in plants and animals
• − describing how matter is recycled in an ecosystem through interactions among plants, animals, fungi, bacteria and other microorganisms
• − interpreting food webs, and predicting the effects of changes to any part of a web
• describe the process of cycling carbon and water through an ecosystem
• identify mechanisms by which pollutants enter and move through the environment, and can become concentrated in some organisms (e.g., acid rain, mercury, PCBs, DDT)