TUNA FOR LUNCH A CASE STUDY EXAMINING MERCURY BIOACCUMULATION AND BIOMAGNIFICATION ANSWER KEY

The California gold rush over one hundred years ago used mercury to mine for gold and today mercury is still contaminating rivers and lakes in those mining areas. I hope you will find these comments useful. Please see our usage guidelines , which outline our policy concerning permissible reproduction of this work. Define biomagnification and explain how it leads to higher concentrations of toxins in animals that are higher up the food chain. Human activities have been increasing mercury concentrations globally, and coal-burning power plants are the most common source of mercury pollution, a fact many students are unaware of. There is a very urgent need to get this information into the hands of the next generation of citizens. As a former high school environmental science teacher and college professor biochemist , I found your case history very relevant to the dangers of mercury pollution.

Biomagnification; bioaccumulation; mercury; neurotoxin; fish consumption; tuna; food chain; food web; trophic; coal-burning. Define biomagnification and explain how it leads to higher concentrations of toxins in animals that are higher up the food chain. Read, interpret, and apply scientific data presented in graphs and tables for this case study. You might include the politics and economics of controlling mercury pollution as another component to your case history. Explain how mercury enters and moves through the environment.

The CDC has estimated that as many asnewborns are at risk from methyl mercury from the fish consumed. Check out the www. Teaching notes are intended to help teachers select and adopt a case.

tuna for lunch a case study examining mercury bioaccumulation and biomagnification answer key

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Mercury in Fish Power Point.

Tuna for Lunch? – National Center for Case Study Teaching in Science

I hope you will find these comments useful. It could be used as an extra credit project to further understand how science and politics interact with each other in the real world. Explore how biomagnification occurs in other systems and with other compounds if students complete optional final activity.

Return to the homepage. Explain how mercury enters and moves through the environment.

Please see our usage guidelineswhich outline our policy concerning permissible reproduction of this work. It was inspired by a USGS report on mercury in fish, sediment, and water from streams across the U.

Tuna for Lunch?

As a former high school environmental science teacher and college professor biochemistI found your case history very relevant to the dangers of mercury pollution. The case is intended to help students make the connection between an environmental contaminant mercury, a neurotoxin and the food they eat. The ongoing National Health and Nutrition Examination Survey indicate that people living in coastal areas have higher levels of mercury in their blood than individuals living elsewhere.

To become a paid subscriber, begin the process by registering here. Define biomagnification and explain how it leads to higher concentrations of toxins in animals that are higher up the food chain.

This case examines mercury bioaccumulation and biomagnification within the context of the human health impacts of ingesting food specifically, fish contaminated with mercury. Answer Key Answer keys for the cases in our collection are password-protected and access to them is limited to paid subscribed instructors. Teaching Notes Case teaching notes are password-protected and access to them is limited to paid subscribed instructors.

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There is a very urgent need to get this information into the hands adn the next generation of citizens.

tuna for lunch a case study examining mercury bioaccumulation and biomagnification answer key

The California gold rush over one hundred years ago used mercury to mine for gold and today mercury is still contaminating rivers and lakes in those mining areas. Read, interpret, and apply scientific data presented in graphs and tables for this case study.

tuna for lunch a case study examining mercury bioaccumulation and biomagnification answer key

The case has been used in an introductory level environmental science class predominantly non-majorsa non-majors general biology class, and a sophomore level ecology class majors. Explain why there are fish consumption advisories related to mercury.

Case Study: Mercury Bioaccumulation and Biomagnification by Emma Chiu on Prezi

Additional information you might find useful: Biomagnification; bioaccumulation; mercury; neurotoxin; fish consumption; tuna; food chain; food web; trophic; coal-burning. You might include the politics and economics of controlling mercury pollution as another component to your case history.

Human activities have been increasing mercury concentrations globally, and examiing power plants are the most common source of mercury pollution, a fact many students are unaware of.