Which Contributes to the Ozone Hole

question 25

Multiple Choice

Which contributes to the ozone hole?

• A)automobile exhaust
• B)chlorofluorocarbons (CFCs)
• C)loss of Northern forests
• D)All of these choices are correct.

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Definitions:

Trisomy-21

A genetic disorder caused by the presence of an all or part of an extra 21st chromosome, also known as Down syndrome, characterized by a distinctive phenotype and intellectual disability.

Down Syndrome

Down syndrome is a genetic disorder caused by the presence of an extra chromosome 21, characterized by physical growth delays and intellectual disabilities.

Central Nervous System

The part of the nervous system consisting of the brain and spinal cord, responsible for processing information and coordinating bodily functions.

Huntington's Disease

A genetic disorder that causes the progressive breakdown of nerve cells in the brain, leading to physical, cognitive, and psychiatric symptoms.