a country with an unexpectedly higher average radiation emission than Japan

(1)It’s Korea
(2)I’m sure I’ve never been hit by an atomic bomb
(3)The nuclear power plant didn’t even go off. What does this mean

(1)The reason why Korea’s radioactivity level is high is because of the granite scattered everywhere
(2)The radioactive material in the original granite is
(3)It’s mostly potassium-40, which isn’t very dangerous
(4)Half-life is 12.5 billion years, and after the collapse
(5)Non-radioactive substances such as sodium argon
(6)There is also a considerable amount of uranium and thorium
(7)Of course, the alpha sun beta won’t have a significant impact unless they find and rub themselves
(8)Radon, a substance that comes from the collapse of the two, is a problem because it is a toxic radioactive gas
(9)Thorium releases radon 220
(10)For this reason, in the case of the first floor or underground
(11)If there is no ventilation, there is a risk of being poisoned with radon
(12)Still, no matter how much mass melted by the soap, it’s much more dangerous to cut a chunk of flesh with a knife
(13)It is right that Japan has a higher risk