1) Zn (zinc) is an important element in our immune system. What form of zinc does the human body absorb the best?
2) What is element 115 and the connection some scientists are suggesting to UFO’s?
3) What is the role of Gadolinium in MRI’s?
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Summary for each video:

chapter 9

chapter 9

chapter 9

trends in the periodic table chapter 8

trends in the periodic table chapter 8