Question-

PART ONE:

The radiations of radioactive nuclides:

1) Affect the emulsion on a photographic film

2) Ionize surrounding air molecules

3) Make certain compounds fluoresce

4) Do all of these

PART TWO:

The subatomic research that can be conducted using particles and radiations from naturally radioactive substances is limited because the radioactive emissions:

1) Are highly accelerated

2) Have insufficient energy

3) Have great penetrating power

4) Have an easily controlled rate.