Answer:
15
Explanation:
Atomic mass refers to the sum of protons and neutrons in the nucleus of an atom. So protons are 7and neutrons 8. 7+8=15
<span>The Bretz flood was the collapse of a glacier damming a lake with half the volume of Lake Michigan that covered western Montana.</span>
Alloy is the combinations of two metals combined.
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Answer:
D) Liu Bang
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