Answer:
the answer would be C: point source
Explanation:
because it specified the source of the pollution (manufacturing plant)
I just took that quiz , it’s A
Answer:
d is the answer of this question
Answer:
0.9715 Fraction of Pu-239 will be remain after 1000 years.
Explanation:
Where:
= decay constant
=concentration left after time t
= Half life of the sample
Half life of Pu-239 = [
Let us say amount present of Pu-239 today =
A = ?
0.9715 Fraction of Pu-239 will be remain after 1000 years.