The greatest amount of radioactivity in the oceans has come from
A) hospital waste.
B) natural sources.
C) cosmic radiation.
D) disposal of high level radioactive waste.
E) testing of nuclear weapons.

Question

Quizplus · Accepted Answer

The greatest amount of radioactivity in the oceans has historically come from the testing of nuclear weapons, particularly during the mid-20th century when numerous atmospheric and underwater nuclear tests were conducted.

The Greatest Amount of Radioactivity in the Oceans Has Come