PA.4. Environment and Ecology
4.1.5.A. Describe the roles of producers, consumers, and decomposers within a local ecosystem.
4.1.5.C. Describe different food webs including a food web containing humans.
4.2. Watersheds and Wetlands
4.2.5.B. Identify important wetlands in the United States
4.4. Agriculture and Society
4.4.5.A. Explain why animal production is dependent upon plant production.