Carbon Dioxide (CO₂) Is

question 9

Multiple Choice

Carbon dioxide (CO₂) is

• A)removed from the atmosphere during photosynthesis.
• B)a source of carbon for autotrophs.
• C)returned to the atmosphere during respiration and fermentation.
• D)used by marine organisms to make limestone for their hard shells.
• E)All of the choices are correct.

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Definitions:

Consumption Of X

The act of using up a particular resource X or the amount of X that is used.

Units Of Y

A generic term for the measurement used to quantify the output in a given economic or mathematical model.

Utility Function

An economic model that describes how consumers rank different bundles of goods according to the levels of satisfaction or utility those bundles provide.

Horizontal Axis

In a graph or chart, the horizontal line along which the values of one variable are plotted or measured.