An Investigation That Studies the Frequency of Flossing and Periodontal

question 20

Multiple Choice

An investigation that studies the frequency of flossing and periodontal disease is called a ________.

• A) Correlational study
• B) Survey
• C) Trend
• D) Case study
• E) All of the above

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Definitions:

Epithelial Cells

Cells that line the surfaces of the body, including skin, blood vessels, organs, and cavities.

Stem Cells

Undifferentiated biological cells that can differentiate into specialized cells and divide to produce more stem cells.

Specialized Cell Types

Cells that have developed distinct physical and functional characteristics during growth, tailored to perform specific tasks within an organism.

Apex

The top or highest part of something, especially one forming a point.