In an Experiment to Study the Effects of Fertilizer on Plants

question 67

Multiple Choice

In an experiment to study the effects of fertilizer on plants, the fertilizer used on each plant would be

• A)the dependent variable.
• B)an extraneous variable.
• C)an irrelevant variable.
• D)the independent variable.

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Definitions:

Incarceration

The state of being confined in prison; imprisonment.

Wetland

An area of land saturated with water, either permanently or seasonally, creating a distinct ecosystem often rich in biodiversity.

Dredged Material

Material that has been removed from the bottom of water bodies to maintain or increase waterway depth for navigation and flood control purposes.

Marketable Discharge Permits

Permits that allow holders to emit a certain amount of pollutants into the environment, which can be bought, sold, or traded, creating an economic incentive for reducing emissions.