Environmental Sciences, asked by Sureshj3677, 6 months ago

____ is a natural source of radioactivity a)mining and processing of radioactive ores
b)radioactive fallouts during nuclear weapons testing
c)cosmic rays from space
s)use of radioactive isotopes in medical technology

Answers

Answered by ceickettech4

1

Answer:

cosmic rays

hope it helped you

Answered by Anonymous

1

cosmic rays from the space

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