Answer: Absolute dating is used to determine a precise age of a rock or fossil through radiometric dating methods. This uses radioactive minerals that occur in rocks and fossils almost like a geological clock. ... These isotopes break down at a constant rate over time through radioactive decay.
The form of heat transfer taking place in the crust of the Earth would be Convection.
Answer:
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Explanation:
Alkaline earth metals are in group 2. The number of valence electrons of elements in group 2 is 2.
Br is a non-metal. The other answers like Os, Ir, W are not combinations while Sr is a metal. So Br is your answer.
106.4 is going to be your answer