The Greatest Human Impact on the Carbon Cycle Has Been

question 52

Multiple Choice

The greatest human impact on the carbon cycle has been through ______________

• A) depletion of aquifers
• B) combustion of fossil fuels
• C) increased respiration of the exponentially growing human population
• D) mining of limestone (calcium carbonate)
• E) use of synthetic fertilizers

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Definitions:

Linear Relationship

A type of relationship between two variables where a change in one variable is associated with a proportional change in the other variable.

Independent Variables

Variables in an experiment or model that are manipulated or varied to observe their effects on dependent variables.

Regression Analysis

A statistical method used to examine the relationship between a dependent variable and one or more independent variables.

Independent Variable

A variable in an experiment or study that is manipulated or changed by the researcher to observe its effects on the dependent variable.