Assertion: strontium 90's life | /r/ObjectUse | used by scientist
Facets:
Source sentences:
text: I cant grasp half life - the study guide question is how is half life dating used by scientists -
text: I cant grasp half life - the study guide question is how is half life dating used by scientists -
text: I cant grasp half life - the study guide question is how is half life dating used by scientists -
text: I cant grasp half life - the study guide question is how is half life dating used by scientists -