51. Community Ecology
Community Structure
3:26 minutes
Problem 8b
Textbook Question
Textbook QuestionDraw a vertical food chain (part of a food web) showing that sea urchins eat kelp and that sea otters eat sea urchins. Use this model to (1) show or explain how a trophic cascade works; and (2) offer an explanation for why otters are considered a keystone species.
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