Anonymous ID: d7d20a Nov. 6, 2020, 10:08 p.m. No.11516184   🗄️.is 🔗kun   >>6190 >>6353

Anonymous ID: d7d20a Nov. 6, 2020, 10:53 p.m. No.11516629   🗄️.is 🔗kun

>>11516570

Do non radioactive isotopes burn up?