Which of the Following Is Not True of Carbon Dioxide

question 9

Multiple Choice

Which of the following is not true of carbon dioxide?

• A)It is critically important in regulating the temperature of the planet.
• B)Present levels are higher than at any time in the past 800,000 years.
• C)The steady increase of atmospheric CO2 is primarily from fossil fuel burning.
• D)Overall,atmospheric CO2 has increased by 16% from 1992 to 2012.
• E)It occurs in large amounts in the atmosphere relative to other gases.

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Definitions:

Entrenched Meanders

River meanders that have cut deeply into the landscape, often in a canyon form, showing a history of flowing through a relatively stable channel for an extended period.

Distributaries

Branches of a river that flow away from its main course, typically seen in delta regions where the river splits into several smaller channels near its mouth.

Alluvial Fans

Cone-shaped deposits of sediment crossed and built up by streams, typically found at the base of mountain ranges where a river exits a steep valley.

Upper Mississippi

Refers to the portion of the Mississippi River that flows from its headwaters to the confluence with the Missouri River.