For most people living in developed countries,their greatest exposure to radiation is from

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Most people living in developed countries are exposed to radiation primarily from natural sources such as cosmic radiation, radiation from the ground, and from radon gas in their homes. Dental X-rays and X-rays of the bones of the body are also sources of radiation exposure, but they are typically much lower in dose compared to natural sources. Fossil fuels do not typically emit significant amounts of radiation.

For Most People Living in Developed Countries,their Greatest Exposure to Radiation