These organisms have displaced native plants and animals, altered ecosystems, caused disease, and interfered with industry, agriculture, and recreation. Procedure Revisit notes from the discussions concerning food source represented by models and location of food source in an ecosystem. Discuss and record how a change in the ecosystem would impact the food supply. Or, the mysterybill might require a large number of toothpicks, depriving tweezerbills of their preferred food. This introduced species could have catastrophic consequences on existing populations dependent on this food source.
Students are to consider and graph the data, present the problem and discuss possible consequences.
Creates and uses graphs to represent data. Refers to graphs to support conclusions. Communicates effectively using appropriate vocabulary. Information is correct. Demonstrates a clear understanding of concepts.