A Geiger counter measured the radiation in a closet and found it to be 0.7 mSv. What is this value in Sv, and is this level of radiation higher or lower than natural background radiation? 0.7 Sv, which is higher than natural background radiation 0.0007 Sv, which is lower than natural background radiation O 7 Sv, which is higher than natural background radiation 0.07 Sv, which is higher than natural background radiation this