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Task: Decide what information can or cannot be inferred from food chain diagrams. Assessment focus: reading food chains

Task: Identify how features/adaptations of a starfish help it survive, and decide whether the amount of evidence from scientists' observations supports or does not support their theory/inference. Assessment focus: using observations as evidence to inform theories.

Students are provided with a food web based on organisms of the rocky shore and sea. Students use this to answer questions about food chains in the food web.

Task: Students answer questions about feeding relationships in a rocky shore ecosystem. Assessment focus: interpreting a food web.