In the Greenhouse Effect, What Is the Direct Cause of Extra

question 67

Multiple Choice

In the greenhouse effect, what is the direct cause of extra heating of the Earth's surface?

• A)Additional carbon dioxide makes the atmosphere more opaque to infrared light, trapping part of the blackbody radiation that would normally escape into space.
• B)Additional carbon dioxide makes the atmosphere more transparent to infrared light, allowing the sun to more directly heat the surface.
• C)Additional carbon dioxide makes the atmosphere denser, and thus heat passes through it more slowly.

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Definitions:

Nominal Variables

Variables that represent categories with no intrinsic ordering or hierarchy, such as gender, nationality, or brand.

Null Hypothesis

In statistics, a statement suggesting that there is no significant effect or difference, and any observed deviation is due to random chance.

Chi-Squared Test

A statistical test used to determine if a significant relationship exists between two categorical variables by comparing observed and expected frequencies.

Contingency Table

A table used in statistics to summarize the distribution of two categorical variables, showing the frequency at which certain combinations of the variables occur.