Which of the following best matches the description?Time it takes for half of the radioactive material to decompose.

A. radioactive half-life
B. beta radiation
C. heavy-water reactor
D. nuclear fusion
E. radiation
F. nuclear breeder reactor
G. alpha radiation
H. decommissioning
I. nuclear fission
J. transuranic waste
K. thermal pollution
L. gamma radiation
M. light-water reactor
N. U-235
O. rem
P. moderator


Answer: A

Environmental & Atmospheric Sciences

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