Mercury in Fish Quiz

What is the form of mercury found in fish?

• Inorganic mercury

• Elemental mercury

• Organic mercury

• Methylmercury

Why are babies in the womb and infants especially vulnerable to methylmercury toxicity?

• Because they have strong immune systems

• Because their brains are fully developed

• Because their nervous systems are still developing

• Because they consume less fish

How do humans acquire methylmercury?

• Through breathing air

• From fish consumption

• From drinking water

• Through skin contact

Where is mercury released into the atmosphere from?

• Mining activities, solar radiation

• Deforestation, earthquakes

• Agricultural activities, ocean currents

• Industrial activities, volcanic emissions

How does methylmercury enter aquatic food chains?

• Through direct sunlight exposure

• Through soil absorption

• Through sediments

• Through water evaporation

What happens to methylmercury as it moves up the food chain?

• It bio-magnifies

• It becomes less toxic

• It dissolves in water

• It evaporates

Which animals tend to have a very high concentration of methylmercury due to their position in the food chain?

• Sharks and swordfish

• Turtles and jellyfish

• Crabs and lobsters

• Dolphins and seals

What types of fish are recommended to be avoided by pregnant women and children under the age of 11?

• Tuna and mackerel

• Sharks and swordfish

• Cod and haddock

• Salmon and trout

Why do pregnant women, thinking about becoming pregnant, or breastfeeding women need to avoid certain types of fish?

• To avoid mercury poisoning

• To support sustainable fishing

• To prevent allergies

• To protect the fish population

What is the main reason for understanding the biogeochemical cycle of mercury?

• To increase fish population

• To prevent mercury accumulation in fish

• To reduce water pollution

• To promote industrial activities