Sources of radiation their utility and limitations radiation

1.	Sources of radiation their utility and limitations radiation
Answer» TERRESTRIAL Radiation. The Earth itself is a source of terrestrial radiation. RADIOACTIVE MATERIALS (including URANIUM, thorium, and radium) exist naturally in soil and ROCK. Essentially all air contains radon , which is responsible for most of the dose that Americans receive each year from natural background sources.

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Sources of radiation their utility and limitations radiation

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