Thinning Arctic ice driving mercury pollution: NASA

The video discusses how climate change affects Arctic ice, leading to mercury pollution. A NASA report explains that sunlight reacting with salt in ice produces bromine, which destroys ozone and triggers a bromine explosion. This process creates bromine monoxide, which reacts with gaseous mercury, causing it to fall to Earth and accumulate in fish.

What environmental change is contributing to mercury pollution in the Arctic?

• Climate change

• Deforestation

• Urbanization

• Overfishing

What is produced when sunlight reacts with salt in the ice at cold temperatures?

• Fluorine

• Chlorine

• Bromine

• Iodine

What is the effect of bromine on the ozone layer in the lower atmosphere?

• It has no effect

• It creates more ozone

• It strengthens the ozone layer

• It destroys the ozone layer

What is the term used for the chain of chemical reactions initiated by bromine?

• Bromine explosion

• Bromine reaction

• Bromine cascade

• Bromine cycle

Where does mercury accumulate after reacting with bromine monoxide?

• In the atmosphere

• In the soil

• In plants

• In fish