Any Condition That Can Change and That Might Affect the Outcome

question 100

Multiple Choice

Any condition that can change and that might affect the outcome of the experiment is called a(n)

• A)variable.
• B)mediator.
• C)stimulus.
• D)experimental behavior.

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Definitions:

Trachea

Principal thoracic air duct of terrestrial vertebrates; windpipe. One of the microscopic air ducts (or tracheal tubes) branching throughout the body of most terrestrial arthropods and some terrestrial mollusks.

Partial Pressure

The pressure that a gas in a mixture of gases would exert if it alone occupied the entire volume.

Nitrogen Gas

A diatomic gas that is colorless, odorless, and makes up about 78% of the Earth's atmosphere, used by certain bacteria to produce usable forms of nitrogen for plants.

Sea Level

The average height of the sea's surface between high and low tide, used as a base reference for measuring elevation and depth on Earth.