Answer: The gamma rays penetrate through the body and require several inches of lead or concrete to prevent penetration.
Explanation: Gamma rays are a form of ionizing radiation. Ionizing radiation is any form of radiation that has sufficient energy to ionize an atom. Ionization means detaching an electron from an atom, thus changing its properties. That is why ionizing radiation is hazardous to human health. Imagine changing the genetic structure of your DNA. Of course, this results in adverse effects on human health.
There are other types of ionizing radiation. However, gamma rays have the highest penetrative power. We can stop this penetration using a few inches of lead or concrete.
To learn more about gamma rays:
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