The medical test used isotopes.
Doctors can use radioactive isotopes to treat certain types of cancer, such as prostate cancer. Geologists use isotopes to date some rocks and fossils.
All nuclear medicine techniques use radioactive isotopes.
Scientists use the relative amount of stable and unstable isotopes in an object to determine its age.
Some careers that use the Spanish language include customer service and airline attendants.
electricians.
Some imaging uses radioactive isotopes to see various parts of the body.
Some careers, like sailing always use compass, but that depends on if the ship is employed to sail everyday.
economists and actuaries
medicine study
ballistics
yes