Answer:
How can I reduce my exposure to radiation from X-rays?
- Tell the X-ray technologist in advance if you are, or might be, pregnant.
- Ask if a protective shield can be used. ...
- Ask your dentist if he/she uses the faster (E or F) speed film for X-rays. ...
- Know your X-ray history.
<u>Radiometric</u> dating uses a radioactive substance to determine the <u>absolute </u>age of something.
<span>The oldest known vascular plants in the northern hemisphere are Devonian
This is true</span>
