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Which One of the Following Describes an ECN

question 103

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Which one of the following describes an ECN?


Definitions:

Natural Radioactivity

The spontaneous emission of radiation from the nucleus of an unstable atom as a result of nuclear decay processes.

Mineral Form

A structured and naturally occurring chemical compound with a specific chemical composition and crystalline structure.

Photographic Plates

Flat sheets of metal or glass coated with a photosensitive chemical used to capture images in traditional photography.

Radioactive Materials

Substances that emit radiation as a result of nuclear decay, used in a variety of applications but also associated with health risks.

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