Working out: 6.25% = 4 half lives (20x4=80ma) 80ma is how old the rock is
Answer:
options A I am thinking ok
Well, the part of all the fire and heat probably. Since under, below us (where the inferno supposedly is) in the centre of Earth, there is a sphere of liquified metals which means temperatures are amazingly high and it's basically only fire down there. This sphere is know as the inner core.
Hope it helped,
BioTeacher101
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