The Atmosphere Contains About 700

question 45

Multiple Choice

The atmosphere contains about 700. billion metric tons of carbon in the form of carbon dioxide. In the carbon cycle, about 200. billion metric tons of carbon (as carbon dioxide) enters the atmosphere each year. Assuming that 200. billion metric tons of carbon also leaves the atmosphere annually, how many years does the average carbon atom spend in the atmosphere in each cycle?

• A)0.29 years
• B)3.5 years
• C)500. years
• D)140,000 years
• E)More information is needed in order to calculate the answer.

---

Definitions:

Philippe Pinel

A French physician renowned for his contributions to the humane treatment of the mentally ill in the late 18th and early 19th centuries.

Mental Hygiene

The practice of maintaining mental health through the prevention and treatment of mental disorders, as well as by promoting healthy lifestyles and environments.

Antisocial Personality

A disorder characterized by a pervasive pattern of disregard for, and violation of, the rights of others.

Drug Abuse Disorder

A medical condition characterized by the compulsive use of drugs despite harmful consequences, leading to mental and physical health issues.