Carbon Dioxide Is a Pollutant Because It

question 74

Multiple Choice

Carbon dioxide is a pollutant because it

• A) is absorbed by the ocean and converted into insoluble carbonates.
• B) is utilized when fossil fuel is burned.
• C) is a waste product of photosynthesis.
• D) cannot be recycled at a rate equal to its present production.
• E) is replacing oxygen as the most abundant gas in the air.

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Definitions:

Control Variable

A variable that is kept constant during an experiment to ensure that any changes in the outcome are due to the independent variable.

Independent Variables

Factors in a study or experiment that are altered or adjusted in order to examine their impacts on the variables that depend on them.

Dependent Variables

In research, these are the variables that are tested to see if they are affected by changes in independent variables, essentially the outcome of interest.

Unscientific Thinking

Reasoning or belief that does not adhere to the scientific method, often relying on anecdotal evidence, personal experience, or unverified claims.