- Identify the different roles of living things in the environment (producers, consumers, scavengers, decomposers)
- Analyze the roles of the different living things in the given food chain
- Analyze the roles of the different living things in the given food web
- Evaluate the effects of human activities (reforestation, recycling, overpopulation, pollution, overexploitation, introduction of invasive species)on the roles of organisms in a food chain
