Which stable element is used to determine the age of volcanic rock? a- argon b- carbon-14 c- potassium d- carbon-12

D. Carbon -12

Explanation:

Carbon-12 is of particular importance in its use as the standard from which atomic masses of all nuclides are measured, thus, its atomic mass is exactly 12 daltons by definition.

the answer is carbon 12  

Explanation:

i took test there go peeps in edgenity

with the invention of the automobile, the woman of the house could drive to the store and get groceries. women were also free to socialize more. during world war ii women were allowed to work in factories to the war effort and could drive to work or ride mass transit buses to their jobs.

i think the answer is a and b

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