Search the internet.
Go to Google, for example, and search for, uh, "radioactive dating techniques".
I tried that, and Google pointed me to more than one million websites to visit.
Meaning, you can get a lot of help from Google for your question.
I have to
Name 3 professions that would have a use for radioactive dating techniques
Write a sentence for each, explaining how you think the professions would use them.
But i have no idea what i should write. Can you help me?