Which Substance Is a Source of Radon-222 in or Around

question 26

Multiple Choice

Which substance is a source of radon-222 in or around the home? 

• A) furniture stuffing 
• B) foam insulation 
• C) dry-cleaning fluid fumes on clothes 
• D) soil surrounding the foundation

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Definitions:

Variable

A characteristic, number, or quantity that increases or decreases over time, or takes different values in different situations.

Diversify Sources

A strategy to reduce risk in investment or business operations by acquiring a wide range of assets or various types of resources.

Dependency

A situation where one entity relies on another for support, resources, or sustenance.

Mission Statement

An official outline of the goals and principles held by a corporation, organization, or person.