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Elenna [48]
3 years ago
7

What is a half-life?

Geography
2 answers:
Fofino [41]3 years ago
6 0
I'd go with option "C"
disa [49]3 years ago
3 0

it is the time taken for the radioactivity of a specified isotope to fall to half its original value.

was it worth it? XD

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