With Respect to Modeling Earth's Climate System, Which of the Following

question 9

Multiple Choice

With respect to modeling Earth's climate system, which of the following best describes global circulation models (GCMs) ?

• A) accurately simulate the past climate and are used to project the future climate
• B) simulations of the past climate are too uncertain, thus future projections are fairly meaningless
• C) are only models, hence cannot accurately simulate something as complicated as climate
• D) can accurately simulate future temperature increases, but not precipitation
• E) have too many unknown variables to be used with any degree of certainty

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