Uses for radioactive tracers is to look for flaws in metal objects and are also used by doctors to x-ray images to look at your bones.
Answer:
Option A is definitely the correct answer.
Explanation:
from my analysis
( Just fill those words into each dash or empty space accordingly as you saw it )
Good luck
D is the answer here look
Answer: Anion. The resulting of losing or gaining electrons would be Anion.