Seafood and Human Health

In this lesson, students are fi rst asked whether humans are part of food chains, and to modify a food chain/web, an energy pyramid, or a cycle of matter and flow of energy graphic model to show where humans fit into these models. Students then learn from a PowerPoint slide shown about the USDA dietary guidelines that fish and shellfish are healthy foods, but that some seafood should be avoided because of mercury content. Images in the slide show illustrate the process of bioaccumulation.

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bioaccumulation, biomagnification, dietary guidance, food hazard, food pyramid, human diet, mercury, seafood