QUIZ 493

Check your Knowledge Quotient!

1. More than 140 countries agreed on a legally binding treaty to curb mercury pollution.

A. True

B. False

C. Both of the above

D. None of the above

2. Drastic reductions in Arctic sea ice in the last decade may be intensifying the chemical release of bromine into the atmosphere, resulting in ground-level ozone depletion and the deposit of toxic mercury in the Arctic.

           

A. True

B. False

C. Both of the above

D. None of the above

           

3. The connection between changes in the Arctic Ocean's ice cover and bromine chemical processes is determined by the interaction between the salt in sea ice, frigid temperatures and sunlight.

A. True

B. False

C. Both of the above

D. None of the above

4. When bromine chemical processes happens,  the salty ice releases bromine into the air and starts a cascade of chemical reactions called a "bromine explosion."

           

A. True

B. False

C. Both of the above

D. None of the above

5. Bromine also can remove ozone from the lowest layer of the atmosphere, the troposphere.

A. True

B. False

C. Both of the above

D. None of the above

Best of luck!

Answers

1 – A, 2 – A, 3 – A, 4 – A, 5 – A