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This makes food safer and also keeps it fresh longer.

These substances are absorbed by our bodies, into our tissues, organs, and bones, and are constantly replenished by ingestion and inhalation.This radionuclide has been around since the birth of the earth and is present as a tiny fraction of all the potassium in nature.Potassium-40 (K concentration in the body is fairly high.In both cases, however, the dose rate will be extremely small compared to the normal background dose rate.The heavier person will receive a greater internal dose because the decay of the K produces other low-penetrating radiation (beta radiation) that deposits its energy within the body.

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