Approximately How Long Would It Take for CO₂ Levels to Return

question 159

Multiple Choice

Approximately how long would it take for CO₂ levels to return to nineteenth-century levels if we cut emissions by 90% immediately?

• A)hundreds or thousands of years
• B)1 month
• C)6-12 months
• D)10 years
• E)100 years

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Definitions:

Cross Rate

Exchange rate between two currencies computed by reference to a third currency, typically the US dollar.

Spot Market

A public market for trading financial instruments or commodities that are delivered immediately.

Trade Settled

The completion of a securities transaction when the seller delivers the security to the buyer and receives payment in return.

Purchasing Power Parity

An economic theory that compares different countries' currencies through a "basket of goods" approach, to assess relative currency value.