Science help please!!?

Question

1. Where are many radioactive nuclides presently made?
Oak Ridge, Atlanta, Savanna or Nashiville?

2. Radioactive carbonis naturally produced in the atmosphere by teh actioin of?

3. Radioactive materials whose movement is used to monitor processes and measure flow rates are called?

Answer 1

1. I think a lot of radionuclides are made at Oak Ridge, Tenn. I think they still make tritium at Sanvanna, Ga.

2. Bombardment of atmospheric nitrogen by cosmic rays (from outer space), mostly protons. 14N7 + p ===> 14C6 + n

3. Tracers.