Mercury in Fish Mercury Is a Highly Toxic Metal Found in Neon Signs

question 223

Multiple Choice

Mercury in Fish
Mercury is a highly toxic metal found in neon signs, fluorescent lights, older thermometers, and certain kinds of telescopes. It can also be found in something that many people eat on a regular basis: fish. The mercury we might find in a can of tuna is most likely an indirect result of the coal industry. Mercury, which is naturally found in coal, is released into the air when coal is burned. It finds its way into waterways via mercury-laced rain.
Mercury accumulates in certain kinds of fish through a process called biomagnification. Biomagnification occurs when a substance enters the food chain in small amounts at the very bottom and then increases in concentration in animals higher up on the food chain. Once a fish eats another creature containing mercury, the mercury does not leave that fish's body, but instead is stored in fat. Therefore, the mercury continually accumulates as more mercury-contaminated fish are eaten.
Despite the toxicity of mercury and the widespread nature of fish contamination, there is no need for the public to be overly apprehensive. Many popular fish, such as salmon, catfish, or tilapia, are generally safe to eat. Other fish, especially tuna and grouper, should only be eaten in moderation. Young children and pregnant women should be especially cautious about how many servings of mercury-contaminated fish they have per week. It is recommended that people in these groups not eat more than 2 servings of mercury-contaminated fish per week. Fish with the highest levels of mercury include shark, swordfish, and king mackerel. All people should avoid eating large amounts of these kinds of fish, and no one should eat these fish more frequently than once a month.
Question: Which detail is included regarding safety when eating fish?

• A)It is recommended that elderly groups and pregnant women limit their weekly intake of mercury-contaminated fish.
• B)It is in the public's best interest to limit intake of mercury-contaminated fish.
• C)It is best if young children avoid mercury-contaminated fish.
• D)Intake of fish with the highest levels of mercury should be limited.

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Recognize the classifications and functions of biological molecules such as lipids and carbohydrates.

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Definitions:

Perfect Complements

Goods that are used together in fixed proportions due to the nature of their consumption or utility.

Income Effect

The change in an individual's or economy's consumption patterns due to a change in real income.

Substitution Effect

The economic principle that as the price of one good increases, consumers will replace it with a cheaper alternative, holding utility constant.

Price Change

A variation in the cost of goods or services over time, which can result from factors like supply and demand, inflation, or market dynamics.