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Why are some atoms radioactive and others are not? Where does radioactivity come from in nature? Why are some types of radiation dangerous to humans and others are not? The idea of this video is to give an introduction to radioactivity so that we can better understand the answers to some of these questions. DISCOUNT ON CAMBLY and CAMBLY KIDS Special offer to learn English with native speakers with limited coupons: CIENCIATODODIACOMECOU https://bit.ly/40QfzOB MY T-SHIRTS: http://useloos.com.br Become a member of our channel to help keep the videos online! http://youtube.com/cienciatododia/join Discuss this video on our Discord! / discord My social networks: / pedroloos / pedroloos Our podcast: http://anchor.fm/sinapse E-mail: [email protected]