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Question

Increased use of CFCs in the world is likely to have resulted in which of the following statements.

A
Person in Africa is more likely to develop skin cancer.
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B
Person in Antarctica is more likely to develop skin cancer.
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C
Person in Africa is less likely to develop skin cancer.
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D
Person in Antarctica is less likely to develop skin cancer.
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Solution

The correct option is B Person in Antarctica is more likely to develop skin cancer.
CFCs released as a result of human activity are carried to the Earth's poles by planetary winds and are concentrated there.
Since chlorine that is formed by the dissociation of CFCs is responsible for destroying thousands of ozone molecules. This puts the ozone region near the poles at the risk of dissociation.

T
he ozone layer prevents the carcinogenic UV rays from entering the atmosphere. Since Antarctica is around the South Pole where the ozone layer is deteriorating, a person living in Antarctica is more likely to develop cancer since the person would be exposed to more UV rays.

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