Ecologists Using Global Carbon-Balance Models Were Overestimating the Rate of Increase

question 14

Multiple Choice

Ecologists using global carbon-balance models were overestimating the rate of increase of atmospheric carbon dioxide. This discovery led these ecologists to

• A) discard their models.
• B) switch to modeling other phenomena.
• C) conclude that increase in atmospheric carbon dioxide is not a serious environmental problem.
• D) search for evidence of other carbon dioxide sinks in the global cycle of carbon.

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Reference Line

A line in a written communication (like a letter or email) indicating the subject or the purpose of the message, often found at the top or beginning.

Method Of Delivery

The method or process by which a product, document, or message is transferred from one party to another.

Salutation

An expression of greeting, acknowledgement, or respect used in written and verbal communication.